Chelsea legend Frank Lampard believes that Arsenal will not finish in the top four without their talisman, Alexis Sanchez.
The Chilean forward was controversially dropped to the bench for Saturday's 3-1 loss to Liverpool at Anfield following a bust-up with manager Arsene Wenger and certain members of the Gunners squad.
Despite the need for disciplining, Lampard pointed out that the situation needs to be managed quickly and effectively as he believes Arsenal will seriously regress without their top goal scorer.
Speaking on Monday Night Football, as perMirror, Lampard said: "Can that Arsenal team without him finish in the top four? I'm not sure they can. If you lose, as they did, then you've got a real problem too."
The former England international also took a swipe at the Gunners' dressing room following the Sanchez debacle.
"What we did have at Chelsea is a very strong dressing room. If anyone messed around too much and it was detrimental to the team it would be dealt with," he added.
"I don't think (Arsenal have) got a particularly strong dressing room. You go through it - I don't know them personally - you wonder who are the strong characters.
"There might be other players who are disgruntled, ones who are in and out of the team. When criticism starts at a club it spreads and it becomes more.
"When you're in that position that Arsenal are at the minute it becomes very difficult for a manager to deal with it. He's tried to deal with it but he hasn't really drawn a big line. He's drawn a half-hearted line."
Arsenal's take on Bayern Munich at the Emirates on Tuesday night and it will be interesting to see whether Sanchez is recalled to the starting lineup, especially seeing as the Chilean and Wenger exchanged a handshake in training on Monday morning.