The Gunners splashed out a whopping £56million to bring the Dortmund striker to the Emirates last month, and Wright says that the Gabon global needs to play his natural game and he will be a success.
Mkhitaryan's fall to grace at United was attributed by some to Mourinho while Armenia national team manager, Artur Petrosyan, blankly blamed the Portuguese for not being able to get the best out of the forward which led to his drop of form.
But Wenger argued: "People don't know it well but his defensive numbers are quite good".
"I think Arsenal would say: "we'd have you next season".
"Obviously, we're sad to lose him, but I'm excited to see what he does".
United States global Pulisic has established himself as a key man at Dortmund, drawing reported interest from Liverpool and Manchester United.
When asked whether he now can thrive at Arsenal, Rooney replied: I think he is. A lot, he was very hard.
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Mkhitaryan should also benefit from playing in a team that probes opponents with passing.
"First of all we have to win lots of games".
In completely unrelated news, Mourinho's record as United manager against the top six in the Premier League, in the important matches, is six points won from a possible 27. He said he needed to win the league and he got Robin van Persie to score him the goals to get above Manchester City. Football statistics website Who Scored awarded him a rating of 6.3 out of 10, only Mohamed Elneny, Pierre-Emerick Aubameyang and Laurent Koscielny received lower ratings.
Against Everton, Wenger started Mkhitaryan on the left of a midfield trio in a 4-2-3-1 formation, alongside Ozil and Alex Iwobi.
Signed for around £37 million in the summer of 2016, Mkhitaryan helped United to three trophies during his time at Old Trafford, which included scoring a goal in the Europa League final triumph over Ajax last spring.