United sold England international striker Welbeck to Arsenal in the summer of 2014 and signed Radamel Falcao on loan from AS Monaco.
Welbeck struggled to impressed United manager Van Gaal in pre-season, and failed to convince the Dutchman that he was good enough for his team.
Explaining his decision to sell the 24-year-old, Van Gaal told The Telegraph back in November: “I have already said what I think – he was not a line-up player, he was more a substitute than a line-up player.”
Van Gaal’s comments came back to haunt him on Monday, when Welbeck started for Arsenal at Old Trafford and actually scored in the FA Cup tie.
The Englishman’s goal just past the hour mark saw the Gunners win the quarter-final clash 2-1.
Former Arsenal star Keown has now criticised Van Gaal for making that comment all those months ago, and has defended Welbeck for celebrating his goal against United at Old Trafford.
“As for Welbeck, he’s a young man early in his career and was never really given a chance as a centre forward – his preferred role,” the 48-year-old wrote in The Daily Mail.
“And then there were the unnecessary comments from Van Gaal, claiming Welbeck was only good enough to be a substitute at United.
“He wanted to fulfill his dreams at United and he had to listen to that. Now he has the chance to fulfill his dreams with Arsenal.”
Welbeck has not exactly been great since his move to Arsenal, but he has certainly played more than he would have had he remained at United.
The 24-year-old has scored four goals and created 27 chances in 20 Premier League appearances so far this campaign, while having a pass accuracy of 82% and a shot accuracy of 53%.