Premier League chief executive Richard Scudamore has warned Chelsea about the pitfalls of a move to Wembley Stadium while they undergo expansion work at Stamford Bridge.

Both the Blues and their London rivals Tottenham have been mooted with a move to Wembley as they try to improve their current stadia.

But Scudamore is adamant that a move to the national football stadium will pose greater problems for the west London club as they cannot allow clashes to affect the Premier League fixture list.

"They know the rules and what we require," said Scudamore.

"They have to provide a stadium. We can't have a fettered fixture list. Clubs have to be able to deliver 19 home games in the slots that are required, so if they share with a Rugby League club, we can't be fettered as to when those clubs can play."

Chelsea are expected to be out of Stamford Bridge for three seasons while the ground is expanded, and it has been reported that Russian billionaire Roman Abramovich has offered to pay £11million per season to occupy the north west London ground.

In pictures: Wembley Stadium now and then

And Wembley is under restrictions by Brent council as to the amount of events per year it can host - however Chelsea can take advantage of a loophole which nullifies this rule if the attendances are under 50,800 per match.

Scudamore, however, sees the congested schedule at Wembley as a problem, and is less than convinced that Jose Mourinho's side could host all their contracted fixtures without problems.

In autumn, the stadium hosts the RL Challenge Cup final and a series of NFL games – and in spring there are various domestic cup and play-off finals and, this year, a rugby union fixture.

"It's up to them to work out with Wembley or where they want to play, can they deliver that level of commitment to us."

There has also been talk of Chelsea and Tottenham sharing a joint ground instead of competing for one each - talk which Scudamore accepts is a possibility.

"It's perfectly possible to have two teams playing in one stadium but I do know the reason why it's difficult."

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