Vincenzo Montella acknowledged Manchester United have the players to worry him and he expects his Sevilla side to face a "very offensive" opponent at Old Trafford on Tuesday.
Sevilla travel to Manchester having drawn 0-0 with Jose Mourinho's men at the Ramon Sanchez Pizjuan on February 21 in the first leg of their Champions League round of 16 tie.
It was seen as a missed opportunity for Sevilla, given they controlled much of the game and saw Luis Muriel denied a goal by a remarkable David de Gea save just before half-time.
United have won all three of their matches since drawing in Seville, including coming from 2-0 down to beat Crystal Palace 3-2 and Saturday's 2-1 triumph over in-form Liverpool.
While Sevilla have lost two of their four league games since, with Valencia leaving Andalusia with a 2-0 victory on Saturday.
And Montella is well aware of the task facing his side as they look to reach the Champions League quarter-finals for the first time.
"I am as worried as I was in the first leg, because United have a strong physical and technical level," Montella told reporters on Monday.
"It is normal [to be worried] – they are top-level players and they have technique, physical prowess and strength.
"Looking at the first-leg team, his [Mourinho's] side had very offensive players like [Alexis] Sanchez, [Romelu] Lukaku, et cetera. Tomorrow, it will be the same, a Manchester United with very offensive players.
"We played an excellent match in the first leg, we have to play that to 180 minutes now.
"We have another chance tomorrow [Tuesday], we know that United have beaten Chelsea and Liverpool and have come back against Crystal Palace.
"They're on a roll, but we hope to interrupt United's good run. Mourinho is not used to losing at home, so maybe it'll be good to just draw 1-1."
Montella's side head to Manchester with some injury problems, particularly in defence.
Sebastian Corchia and his right-back deputy Jesus Navas are both out injured, meaning Montella is going to have to shuffle his back, though he is adamant he will not be switching to a back three as a result.
"In a game like this, at the highest level, it is important to keep the same principles of your game," Montella said.
"You cannot play differently. We will have four defenders and I have to decide which players.
"I do not have many options for right-back. One can be [left-back, Sergio] Escudero and the others can be [Gabriel] Mercado and [Simon] Kjaer. That will be the choice."
|Neymar targets improvement against Costa Rica|
|Confident Spieth ready to relish ´Car-nasty´ Open|
|All Blacks ring the changes for series finale with France|
|Sampaoli yet to decide on Argentina XI to face Croatia|
|Bale needs Real Madrid assurances, says agent|
|What game were you watching? - Costa bites back at journalist|
|Catalans capitalise on Leeds collapse to secure victory|
|Ronaldo facial hair inspired by Quaresma joke|
|This is not football - Carvajal criticises Iran tactics|
|Costa strike keeps 2018 World Cup waiting for first goalless draw|
|FIFA fines Mexico over discriminatory chants|
|Suarez announces wife´s pregnancy after World Cup heroics|
|Fortune favours Spain´s ´Supermen´ as luck proves to be Iran´s kryptonite|
|Hubert Green, U.S. Open winner who ignored death threat, dies at 71|
|Osaka injured in Birmingham, Kerber crashes out in Mallorca|
|Iran 0 Spain 1: Costa goal breaks stubborn resistance|
|Cilic battles back but Wawrinka bows out at Queen´s|
|Messi the greatest but Croatia will play to beat Argentina, says Dalic|
|Thiem stunned by Sugita in Halle|
|Salah rejects talk of rift in Egypt camp|
|England Women follow up men´s ODI record with T20I high|
|Southgate laughs off dislocated shoulder: Better me than one of the players!|
|World Cup hosts Russia qualify as Egypt make early exit|
|Pique wins 100th Spain cap in Iran World Cup clash|
|Serbia v Switzerland: Kolarov not interested in playing for a draw|
|Rakitic wary of ´uber-motivated´ Messi|
|Not my finest moment - Mickelson issues apology after U.S. Open controversy|
|´Best in the world´ Messi the victim of unfair treatment, says Sampaoli|
|Suarez off the mark but resurgent Russia will not fear stuttering Uruguay|
|Uruguay 1 Saudi Arabia 0: Centurion Suarez strikes to send La Celeste, Russia through|
|Peru boss Gareca not a fan of ´novelty´ VAR|
|Nigeria v Iceland: Hallgrimsson anticipates another intense battle|
|Griezmann to face Peru despite ankle issue and struggles – Deschamps|
|Leicester sign Norwich´s Maddison|
|Leinster face Wasps, Bath, Toulouse in Champions Cup draw|
|2019 Ashes to start World Test Championship|
|Wizards to face Knicks in London next season|
|Vettel eyeing Paul Ricard profits - French GP in numbers|
|Malaga turn to Muniz once again|
|Amrabat: VAR doesn´t work if you do not use it|
|Suarez earns 100th Uruguay cap|
|You´ve got to look beyond football - Denmark chip in to fly new father Knudsen home|
|Neymar returns to Brazil training after injury scare|
|No passports required - Burnley´s 51-year wait for European tie sees Clarets draw... Aberdeen|
|Huddersfield bring in Bacuna to boost midfield|
|Forget the GOAT and the goatee - just enjoy Ronaldo and Messi|
|Ronaldo bearing down on Daei after going past Puskas - The top five goalscorers in international foo|
|Portugal 1 Morocco 0: Record-breaker Ronaldo sends Renard´s men out|
|Halep pulls out of Eastbourne International|
|Brazil v Costa Rica: Coutinho ready for more Selecao toil|
|Muller and Bierhoff dismiss reports of German disharmony|
|Mooy can play at a higher level, says Socceroos boss Van Marwijk|
|Remarkable Ronaldo breaks Puskas´ European record|
|Belgian Grand Prix deal agreed until 2021|
|Isco: I´m not going to speak to Ronaldo again!|
|Slater expects to be fit for Origin II|
|Curran and Overton added to England ODI squad|
|Hussey fears Australia will be left with ´mental scars´|
|Fabianski swaps Swansea for West Ham|
|Loftus-Cheek ready to replace Alli|
|England are a team now - Rashford|
|Lazaridis calls for Cahill to start against Denmark|
|Arzani and Ryan can play at the highest level, says Bosnich|
|Dust (Ja)pan and brush: Blue Samurai fans clean up in Saransk|
|Lodge reaches agreement over New York attack|
|Gerrard can become a strong manager - Arena|
|Arsenal target Torreira has left for €30m, says Sampdoria chief|
|Murray unsure over Wimbledon participation|
|De Gea has to bounce back from Ronaldo shocker - Bosnich|
|Martinez not looking for perfection|