Chelsea plan to bolster their flagging defence with an injection of youth.

The Guardian says reinforcements should arrive for beleaguered manager Andre Villas-Boas in January, even if the outlay may not match the £73.6m committed to the eye-catching purchases of Fernando Torres and David Luiz at the same stage last season.

There is a long-standing interest in the England centre-half Gary Cahill - he will be entering the final six months of his contract at Bolton Wanderers and would come relatively cheap at around £7m - as well as the Atlético Madrid defender Diego Godín and the Porto wing-back Alvaro Pereira.