Arsene Wenger
Arsene Wenger was left frustrated after another disappointing evening in EuropeGetty Images

Former Manchester United midfielder Roy Keane has blasted Arsenal for being soft and weak, saying they will never win the title if they do not bolster the spine of the team. The Gunners lost 3-2 at the hands of Olympiacos at home, putting a major hole in their chances of qualification into the round of 16.

The Gunners conceded two goals from set pieces, with the first coming from a wicked deflection from Alex Oxlade-Chamberlain while the second was down to an atrocious error by David Ospina, who threw the ball into his own net from an innocuous corner. The Gunners got back into the game through Alexis Sanchez but were left exposed on the counter for the third goal, putting them bottom of the group ahead of two matches with Bayern Munich.

Keane, who was involved in many scuffles with Arsenal's Patrick Vieira during his playing career, believes that the fire has gone from the belly of Arsenal players and that they cannot win any game if they keep defending like they did against the Greek outfit. The Gunners face Manchester United in their next game at the Emirates Stadium, where a positive result for either side could signify a title challenge.

"They're soft. They're weak. The goals they give away — you saw [on Tuesday] night, two set-pieces again," Keane stressed, as quoted by The Mirror.

"You've got no chance of winning any big game if you defend like that. There is a certain weakness to the group. They look like they lack characters, leaders and winners," he added.

Arsenal came into the Olympiacos game on the back of a convincing 5-2 win over Leicester City, which saw Alexis Sanchez break his goalscoring drought and score a hat trick. The Chilean scored his fourth goal of the season against Olympiacos but it was too little too late for the Gunners.