I don't know if anyone is doubting Manchester united performance or capabilities on winning their tie against Olympic Lyon it's just that if you watch and notice the redeem of how Manchester united have been throughout the entire season then you would know that you would definitely think twice when playing them especially seeing how their league performance have been although their Europa league is quite different though.
On a second thought, why doubt Manchester United when it comes to the Europa League? It's fine if we understand the rough inconsistent performance of the Red Devils in the English Premier League but when it comes to Europa trophy, I don't think the Red Devils would be ready to let go just like that. You and me understand the equation behind Manchester United urging and persuading to win the Europa League title.
Ruben Amorim will be given all the time he needs because he's new to the system. He has made quite few mistakes and tend to correct them when the time is right for the club. Amorim is ambitious coach, a type of coach that wouldn't become reluctant in one's position, he will make movement for hanging structures for the club he's serving as active manager.