Joe Cole believes Romelu Lukaku “has six weeks to save his Chelsea career”.
The former Blues star made the comments while speaking on ITV as a pundit following the 2-0 FA Cup semi-final victory over Crystal Palace.
Lukaku returned to the squad following a recent injury and came on as a substitute at Wembley.
But the striker missed a golden chance to make his 3-0 when he side-footed against the post after being teed up by Timo Werner.
Cole added: “You look at Werner and he doesn’t give up. Lukaku wants to be that focal point but he missed a chance. When it’s not going for you, it’s not going for you.
“People saw Lukaku as the missing piece of the jigsaw, it didn’t happen.
“But it can come back as quickly as it goes. Football can change in one game.”
Lukaku has struggled for form since his big-money move to Chelsea from Inter Milan for a second spell at Stamford Bridge.
Italian media reports continue to link him with a return to Inter this summer.
And reports in the UK suggest Chelsea boss Thomas Tuchel would be prepared to let Lukaku leave if the right offer came in for the Belgian .