Chelsea are watching Gigio Donnarumma's situation at AC Milan.
The Sun says Chelsea have been forced to start looking for a new keeper with doubts continue to grow over the long-term future of Thibaut Courtois.
The Belgian stopper is showing no signs of reaching an agreement over a new long-term contract with Chelsea, with just 18 months left on his existing deal.
Spanish giants Real Madrid have been after Courtois for the past two years and could finally make their move this summer as the plot of major overhaul of their squad.
That would leave Chelsea needing to bring in a top goalkeeper to replace him - and they have already earmarked AC Milan star Donnarumma as their first choice.
But those plans could be dashed amid reports that PSG have also decided they need to bring in a high-class keeper themselves.