Matt Jansen believes it could take up to four months for him to be ready for Premier League football.
Born-again striker taking it one day at a time
Matt Jansen believes it could take up to four months for him to build up the muscle strength to be ready to play in the Premier League.
The former Blackburn hit-man is back training with his old colleagues and manager Paul Ince is not ruling out handing the striker a contract.
As Jansen has not been in full-time training or undertaken pre-season with Rovers he has conceded his physique is feeling the strain.
The 31-year-old is not putting himself under too much pressure to impress at Ewood Park and is just taking things one day at a time.
"When you go back you suddenly realise how elite you have to be to be a top-class Premier League footballer,' he told the
Daily Mail.
Time needed
"It takes time. I haven't had a pre-season and I haven't trained like this for more than two years.
"Aerobically it's not a problem. But it's the physical conditioning that takes time.
"When you've been out a long time there's a deterioration of the muscle strength and it takes a lot of work to get that back. Probably three or four months.
"You get frustrated because you make basic, elementary mistakes. Because you're fatigued. But I'm giving it my best shot.
"I'm seeing where it takes me. My ultimate goal is to play for them again.
"But the key is not to put myself under too much pressure. I really am just taking it one day at a time."