Chelsea captain John Terry has claimed that manager Jose Mourinho still might sign a further centre-back this summer even though he has agreed a contract extension to stay at least one further season at Stamford Bridge.

The Portuguese boss has currently Terry himself, Gary Cahill and youngster Kurt Zouma on his ranks, but recent reports have claimed he is still likely to bolster the hearth of the back-line with a long-term replacement for Terry such as Real Madrid centre-back Raphael Varane.

And Terry is aware that even though he has signed a new deal, Mourinho might still plan to sign another centre-back.

Should that be the case, the captain would welcome a boost to the squad as he says he is longer worries about getting playing time. He wants to help his side to win titles even if he has to do it from the bench.

"There are a lot more games now than there used to be if we stay in big competitions, and you never know, the manager might even add another player in the summer. It is all about competition and about the football club and winning things, moving in the right direction, and if I am part of that then great, but if not and the club is succeeding then the manager is getting it right as well," Terry told Chelsea official website.

"Now I just want to keep winning major trophies and being in the mix for them. At the start of my career, that is what you want to do, you want to play as many games as you can and become captain. I have done that, I am still captain and I am still hungry to win things and hopefully that passion never goes but if it did it is time to call it a day.

"It is still there the way it was when I was 17 or 18 and breaking through into the first team, and as long as that passion remains and I am capable of playing I will try to stay as long as I can."

Terry still crucial to Mourinho even at the age of 34

Even though Terry's future at Chelsea was under scrutiny during Rafa Benitez's era as manager, the truth is that the veteran defender has been a crucial asset for Mourinho since the boss return to Stamford Bridge in summer 2013.

The 34-year-old defender has indeed started 29 out of 30 Premier League games this campaign despite youngster Kurt Zouma pushing for a place in Mourinho's line-up.

But Terry is aware that being 34-years-old he may sooner rather than later be on the bench in favour of a new signing or French starlet Zouma.

Speaking about the competition with Zouma and Cahill, Terry added: "Gaz [Gary Cahill] has been different class since he came in and again I have struck up a relationship with him on and off the field like I did with Willie and Riccy, and Kurt is going to be a very good player.

"We have seen glimpses of him in the side and not looking out of place so between the three of us we can rotate and that is important as well."