Roy Keane didn't hold back in his brutal assessment of Arsenal and Jack Wilshere's performance against Ostersund in the Europa League on Thursday night.Arsenal, who went into the game with a comfortable 3-0 lead on aggregate, somehow lost 2-1 at the Emirates Stadium to the Swedish minnows.It was nothing short of embarrassing from the Gunners, who deserved to lose and were actually lucky to progress into the last 16."Where do I start," said Keane on ITV's highlights show. "Arsenal are a great example of how not to start a game of football. They're so slow out of the blocks."Poor attitude. The manager summed it up: no energy and no desire. You're looking for your senior players to lead by example."It was Keane's comments on captain Wilshere that drew most attention, though, when he claimed the Englishman is the "most overrated player on the planet"."When Wilshere's your captain, to me, probably the most overrated player on the planet," Keane added. "They got lucky."Ouch. Wilshere has never quite lived up to his potential in an Arsenal shirt, but he's by no means THE most overrated player in football - far from it.Arsenal fans didn't take well to Keane's savagery and now Piers Morgan has bravely hit back at the Manchester United legend.However, Morgan's tweet has seriously backfired after United fans noticed a glaring mistake. Check it out below.

MORGAN CALLS OUT KEANE

"Pipe down, Roy Keane," wrote Morgan. "You were just a poor man's Paul Scholes."

Morgan probably thought he'd ended Keane with his tweet, but that's far from the case considering he compared the Irishman to Paul Scholes, who was a completely different kind of player.

Whereas Keane was United's midfield enforcer, Scholes was the deep-lying playmaker, which is why they worked so well together and why Morgan's tweet is so silly.

MAN UTD FANS HIT BACK