Belgium international Courtois has been linked with a move to Real Madrid and Chelsea may opt to cash-in on the shot-stopper in the summer if he does not sign an extension, as his current deal is due to expire in 2019.
As such the Premier League club are believed to be lining up potential replacements and Donnarumma has been suggested as a target.
The 19-year-old has firmly established himself as the Rossoneri’s number one and has stressed he is happy at Milan, although his agent Mino Raiola has indicated a move could be on the cards.
Chelsea are only likely to firm up their interest if Courtois doesn’t sign an extension and they could face competition if they do make a move for Donnarumma, who is rated as one of the best young keepers in Europe.
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