So here's the question. If Petr Cech, at 33, is available in the summer, and Arsenal have a chance of buying him, what should be Arsene Wenger's best offer? Jose Mourinho says Cech can leave Chelsea if he wishes, but only for big money as he rates him one of the top three goalkeepers in the world. The three most expensive goalkeepers so far: Gianluigi Buffon (£32.6m), Manuel Neuer (£19m) and David De Gea (£18m) – although all were 25 or under when they made their move. Chelsea manager Jose Mourinho has said goalkeeper Petr Cech can leave Stamford Bridge in the summer . David de Gea, Manuel Neuer and Ginaluigi Buffon are the three most expensive goalkeepers in history . Cech cannot command such a fee at his age. A better marker may be the £9m Liverpool paid for Simon Mignolet. Is Cech better than Mignolet? Yes. So if Chelsea asked for £10m for a 33-year-old reserve, should Arsenal be tempted? Yes again. The absence of a world class goalkeeper is holding Arsenal back. Cech could easily last another four years at the top, making him value at £10m. Pat Jennings was 32 when he switched from Tottenham Hotspur to Arsenal in 1977; he played his last game for the club in 1985 at the age of 39. There has never been a question over his worth and Cech could be as important. Cech is a better goalkeeper than Liverpool stopper Simon Mignolet whom the Reds paid £9million for in 2013 . Pat Jennings, pictured with Liam Brady, spent seven years at Arsenal and played his final game aged 39 .
Petr Cech has been told he can leave Chelsea if he wishes this summer . Arsenal have lacked a world-class goalkeeper in recent seasons . Cech could be an important member of Arsenal's side if he switched clubs .