The Spanish international has been good- but Jose Mourinho will still want to consider a natural left-back option with plenty of names mentioned.
One player who has been linked with the club is VfL Wolfsburg’s in-form defender Ricardo Rodriguez.
The Swiss international has been one of the top performing players in the Bundesliga - and at just 21-years-old is considered as one of the world’s top full-back prospects.
The Blues were said to be eyeing up a potential €25 million move for the player in the summer - and at one point it was even suggested he could be involved in part of the Kevin De Bruyne deal.
"We are not prepared to give him. If he wants to hear it again, he may be happy. "
But it appears that Chelsea will not be the only interested party - in fact, they won’t be the only interested party from west London.
Local rivals Fulham are being linked with a move for the player in BILD today - with Felix Magath the ace up their sleeve.
The new coach took over Fulham after the sacking of Rene Meulensteen - and has been leading a survival charge recently.
And should he keep Fulham in the Premier League Rodriguez is said to be one of his number one targets to strengthen the problem Cottagers defence.
Wolfsburg are reluctant to sell - and his price-tag will rocket with a decent World Cup performance - so Fulham may just be out of luck.
But at least Magath is planning for a Premier League stay - with Norwich in their sights.