Arsenal won 2-1 at Old Trafford, and it was ex-Red Devil Danny Welbeck who scored the winner, capitalising on a mistake from Antonio Valencia.
Welbeck was sold on transfer deadline day to Arsenal, with manager Louis van Gaal deeming him surplus to requirements.
Instead he loaned Radamel Falcao, who he left as an unused substitute during the loss.
Wright sent a tweet out after the match mocking the transfer business, which appears to have worked out very much in Arsenal's favour.
So LVG, you said Danny Welbeck didn't score enough goals so you bought Falcao. That worked out well!— Ian Wright (@IanWright0) March 9, 2015
Welbeck's goal return for Arsenal has not been high, he has only eight in all competitions. Four have come in the Premier League, which is an equal number to Radamel Falcao's tally for United.
Falcao clearly no longer has the faith of his manager, who has left him on the bench in consecutive games now against Newcastle United and Arsenal, despite needing goals to get a result.
Welbeck may not have been the prolific striker he passed up either, but the England international's goal was a case of the transfer activity coming back to bite the Dutchman, certainly the decision to allow him to join a rival club.