Jose Mourinho believes Henrikh Mkhitaryan will be better for Arsenal than he ever was for Manchester United.
The Red Devils boss suggested the Armenian will benefit more from the style of football he will be expected to play under Arsene Wenger.
Mkhitaryan fell out of favour under Mourinho this season, who offered him to Arsenal as part of the deal to sign Alexis Sanchez.
The two players completed their respective moves this week, and in Thursday's press conference Mourinho reflected on losing a "fantastic player".
"I think was a fantastic deal and a fantastic deal is only fantastic if it is good for everybody," said the Manchester United boss.
"United and Arsenal made a fantastic deal, I lost a fantastic player, Mr Wenger lost a fantastic player, Alexis changed from a fantastic club to a giant club and Mkhi changed for a fantastic club, so was a great deal for everybody.
"I believe Mkhi is going to be even better than he was with us.
"With one and a half years in England, adapted, knows, Arsenal play the way they think, I think is a good move for everybody, that's why I'm also happy for Mkhi.
"Could he perform better with us, could I take more from his talent, maybe, could he give a little more also to adapt to us, maybe but I don't think regrets, he's in our history, so good feeling for everybody and a very specific transfer between rivals in a big country which I have to say must happen more times."