The Blues have had a tough weekend after falling to a shock 1-0 defeat to strugglers Crystal Palace thanks to a John Terry own goal, which has allowed Liverpool to leapfrog them into first place in the Premier League table - and with games running out, many are beginning to doubt Chelsea's title challenge.
Mourinho has regularly played down Chelsea's chances of winning the league this season, but he is expected to improve his squad in the summer with a view to building a title-winning side for next season - and one of the big question marks right now is over the goalkeeping position.
Petr Cech has been the undoubted first choice in West London for many years, but with Belgian youngster Thibaut Courtois waiting in the wings, many have speculated over who Mourinho will choose to be his first choice next season - but his interest in another goalkeeper could say it all.
After a string of fine performances for Nottingham Forest this season, 23-year-old shot stopper Karl Darlow has attracted interest from Liverpool and Tottenham Hotspur, but now it seems the Blues are about to enter the race, as Mourinho looks to add more home-grown talent to his squad.
Darlow could be groomed to be the long-term heir to Cech, who is still only 31, but the news is the biggest indication yet that Courtois could be on his way out of Stamford Bridge.
Should Darlow be signed, he would be used as the backup to Cech, and with Courtois arguably the finest young goalkeeper in the world, he will be looking to play regular first-team football having starred for Atletico Madrid in La Liga for the last three seasons.
Expectations on Darlow would be low to begin with, but he has shown potential to be a Premier League goalkeeper this season, and Mourinho may look to steal a march on Liverpool and Tottenham in his search for a backup for Cech, with Courtois seemingly available this summer.