"I'm used to Arsene Wenger contradicting himself," he told talkSPORT. "I think he's under a bit of pressure and he's deflecting the blame onto the board.
"There's been money to spend for quite some while but he hasn't always spent it wisely.
"My problem is not with spending it, it never has been. Arsenal aren't at the top of the Premier League because they haven't spent enough money.
"It's because tactically Arsene Wenger hasn't been very good, that's why they haven't challenged in the league for the last three or four years.
"I have to wonder whether Arsene Wenger understands the tactical part of the game. When things go wrong he always says the players are tired or that they didn't play at the right tempo. I don't think he ever gets to the bottom of why they don't played well. It's just general throwaway comments."