Niall Quinn believes Chelsea defender John Terry will find life difficult to win back a regular spot in Jose Mourinho's squad.
The Englishman was a surprise half-time substitution in Chelsea's 3-0 defeat away at Manchester City.
According to Mourinho, he was replaced to add more pace to the defensive department but Quinn says this could be the "start of the end" for the the 34-year-old.
"I think it could be the start of the end for John Terry," Quinn told Sky Sports News.
"I think he's got a hell of a battle on now to get back in the team. To be taken off at half-time in a big game, he would be gutted. He'll be thinking long and hard tonight about what it means for him.
"I think the manager made too much of a point about how right he was over the substitution. That's telling. Terry looked a broken man when the cameras went to him in the second half. He must have been feeling the pressure and this doesn't come out of the blue.
"He effectively got the blame for the first-half performance and the manager justified it afterwards by praising Kurt Zouma.
"I don't think it bodes well for John Terry. I hope I'm wrong, but I don't think I am."