Returning to Chelsea is something that worked for Nemanja Matic, Jose Mourinho and Didier Drogba, with the trio winning the Premier League last season.
Two former Blues would be wise to keep this in mind given their spells away for the club and the fact that they could be useful to the west Londoners.
Juan Mata left Stamford Bridge for Manchester United in January, with Mourinho not a fan of the diminutive Spaniard.
The creative midfielder is yet to win a trophy with the 13-time Premier League champions and his talents are as unheralded as they were under the Special One.
Mata has been cast out into the right wing, away from his preferred central position, with 23 of his 42 starts across all competitions seeing him play in that role.
The 27-year-old won Chelsea’s Player of the Year in both 2012 and 2013 when he was allowed to play through the middle, with the 25 top-flight assists he contributed over that period proving how effective he can be.
In contrast, he’s only set up his teammates seven times across all competitions for the Red Devils this season and a return to a Mourinho-less Blues is exactly what he needs, especially as rumours suggest the Portuguese boss is destined for Old Trafford.
Similarly, Petr Cech’s move hasn’t really worked out for any of the parties involved.
Cheslea replaced the veteran keeper with Thibaut Courtois, who is now apparently unhappy at the club, while Arsenal are a long way off challenging for the title.
Cech has been unable to replicate his previous form with the Gunners, with many pundits criticising him for being beaten at his near post for Crystal Palace’s equaliser in his last outing.
If Courtois clears off, the 33-year-old could return to west London, where he spent 11 successful years, and reclaim his place with ease.