Chelsea's summer signing Ross Turnbull says he believes he will have more than enough opportunities to show his worth despite being third choice goalkeeper.Turnbull, 24, made his first appearance for the club in their 4-0 Carling Cup victory against Bolton on Wednesday. [LNB]Turnbull said: "The manager is rotating the squad, especially in the Carling Cup, so it's a great chance for fringe players to show what they can do. [LNB]"I think we played well on the night. It shows how impressive the squad is." [LNB]Turnbull made only 29 appearances in seven years at Middlesbrough where he began his career as a trainee. [LNB]And with Petr Cech rested for the Bolton match, Portuguese keeper Hilario deputised, but had to be replaced by Turnbull after 23 minutes having taken a blow to his head. [LNB]"It was fantastic, I couldn't have asked for more," said Turnbull. [LNB]"It was a great performance and a great win on the night. [LNB]"We played well, we kept them limited to a few chances. It's difficult playing against Bolton because they are a direct team and they will get chances because they put the ball in your box." [LNB]Turnbull added: "We're in four competitions and we want to win them all, so I think it's important [that there is competition for places]. [LNB]"It's the first final of the season, we've talked about that, and, yes ok, we've rotated the squad, but we still want to win it and it's the same with every other competition we go in. You have to go and try to win it." [LNB]The full interview with Ross Turnbull, as well as the thoughts of manager Carlo Ancelotti and wingers Florent Malouda and Joe Cole, can be heard on this week's Inside Chelsea podcast, available from 1400 GMT on Thursday for download from the BBC podcast website.