Chelsea were cleared to sign players in the next transfer window last week after the Court of Arbitration for Sport halved a ban for breaching rules on the worldwide transfer and registration of players under 18.
Chelsea are five points clear of fifth-placed Manchester United in the race for the final Champions League spot, but recent defeats against West Ham and Everton have seen their credentials questioned.
I think those sort of challenges should be ones that the young players stand up to.
Crystal Palace winger Wilfried Zaha would be hoping to finally get his big transfer with Chelsea keen to sign the £70m-rated player.
"No, I don't think it is a concern at all".
"Overall it's a great young team and everybody wants to play for the side, and that comes down to what Frank and Jody [Morris] have done - everybody wants to play for them".
A 2-1 European victory over Lille on Tuesday helped to lift the mood at the Bridge ahead of another home clash with Bournemouth on Saturday, which they can ill afford to lose as the fixture list starts to pile up.
"Chelsea had to work their way to where they are right now and this is the start of a superstar team, so you don't want to start getting players in who are going to dismantle what they have already built".
"I want them all to get better and they will improve, for sure, because of the age of them and because of where they are in their development".
"I think they maybe have to get a bit more steadiness at the back", he added.