New Norwich City midfielder Jonny Howson insists he will concentrate on regaining his fitness before targeting a place in the Canaries first team.
The 23-year-old has not played since early December, after picking up a knee injury playing for Leeds.
"My first aim is to get back fit and get back on the training pitch," he told BBC Radio Norfolk.
"I'm aware of how well the team is doing so it's going to be tough to get in no matter what."
It took a week for Howson to as the Norfolk side conducted a full medical on the former England Under-21 international.
And the player says he is set to accelerate his recovery from the injury which has kept him out for eight weeks.
"I'm just borderline to getting there," he explained. "I've started doing a bit of strengthening.
"When I first did it they gave me two or three months and we're close to two months now. The main thing is I've had no reaction to it and it's going along nicely."
Howson's contract was set to expire in the summer at Leeds, the club where he started his career and went on to make 190 league appearances.
Despite trepidation over leaving Elland Road, the former United captain insists his move came at the right time.
"It's always hard moving first time. It's something new to me," he said.
"I've been close to a lot of people at Leeds and it was hard to leave in that respect.
"But for my career and a footballing point of view when the chance came about I was very pleased with it.
"Playing in the Premier League is what I've wanted for the past season now."
Defender Ward and striker Vaughan featured in Tuesday's reserve fixture against Chelsea.
"They're like two new signings because they haven't figured at all this season," said Lambert.
"If the lads are ready to play I don't have a problem playing them because I think they can have a major part to play."