I only feel animosity towards Arsenal twice a season, or maybe three times if we play them in a cup game too.
Wenger did an amazing job there, he was the catalyst for the Premier League becoming more international and actually moving into the 21st century, away from the dinosaurs who thought you just need big lads in both boxes and a good piss up before and after the game. He paved the way for the likes of Pep to find this league worthwhile.
His bitterness towards our money was disappointing, but in some ways he cut off his nose to spite his face, he should have just spent more money at Arsenal. But no-one can dispute his achievements and some of the football he had them playing with Henry, Bergkamp, Vieira, et al was superb. He helped stop the vermin winning even more back then too.
Good luck to him. Didn't deserve the shit he got from the media.