Arsenal are looking to win their first Premier League title since 2004. They have finished in the top four every season since, but the championship continues to evade their grasp.
“Arsenal have some really good players – some good characters who roll their sleeves up,” Keane said.
“But they also have got one or two players who are interested in selfies – whatever they are. Instead of focusing on winning Premier League titles, it’s all about how their bodies look, how their hair is, more so than winning football matches.”
Keane spent 13 years of his playing career at Old Trafford, and he was a part of seven Premier League championship squads.
Despite Arsenal receiving heavy criticism from the Man United legend, they were not his only target.
Manchester City was also criticized following their £7m signing of midfielder Fabian Delph, and Keane went on to say who he thinks will win the 2015-16 Premier League title.
“Look at all the players they’ve bought over the past couple of years – I’m not sure many would get into the Chelsea team. For me, Chelsea remain the team to beat,” Keane said.
He also went on to praise his own team’s spending throughout this summer but questioned their title chances.
“Compared to Chelsea, I don’t think United have enough about them – Liverpool certainly haven’t,” Keane said.
“What worries me about United is the fact that even though they have bought so many good players this year and last year – it’s hard to get them all to gel so quickly.”
Man United have signed midfielders Bastian Schweinsteiger, Morgan Schneiderlin and Memphis Depay while also adding defender Matteo Darmian and goalkeeper Sergio Romero.