#5 Reece James - on loan at Wigan Athletic
The transfer ban which Chelsea is facing could be making of Reece James, the 19-year old breakout star in Championship this season. If Chelsea brings him back this summer then it would benefit them in all aspects.
He mostly plays on the right back and bringing him as a genuine rotation option with Azpilicueta will give him games and opportunities to establish himself within the first team. Also, it will give Azpilicueta a chance to be rested far more often than he is now. Having him fresher then they could expect to get a better level out of him too.
If Chelsea properly establishes James then they have a homegrown boy ready to take that spot for the next 10 years or more. He also has the makings of being a possible future captain in a few years time too.