With United in the semi-finals of the Europa League this evening and the second-leg coming next week Mourinho has said he will be willing to rest players against the Gunners when the two meet on Sunday afternoon.
Wenger infamously is yet to beat Mourinho in the Premier League but isn't concerned about what team his great rival selects at the Emirates.
"They have a massive squad with quality players," he said in his pre-match press conference ahead of the game.
"We will not speculate on any weakness of United. Whoever they play they will be strong."
Wenger and Mourinho have never seen to eye to eye but after confirming he will shake the Portuguese's hand he revealed he's more interested in how his team plays rather than any activity off the pitch.
"I do not make of it a managers fight," he added. "What I want is that my team turns up and plays with a stronger performance."