The former England international is reportedly being tracked by Aston Villa, with Dean Smith keen on bolstering his defensive options even further this summer.
Villa recently announced the signing of Ezri Konsa from Brentford and have also added Kortney Hause and Tyrone Mings to their defensive ranks on permanent deals.
Smith has reportedly spent over £80 million on seven summer signings and Villa have recently held talks with Cahill ahead of a potential Villa Park return.
The 33-year-old is looking for regular game time next season after turning out just eight times under Maurizio Sarri at Stamford Bridge during the previous campaign.
A potential deal for Cahill still has work to do, however, with Leeds not thought to be interested in the player, a move for the experienced centre-back could well materialise over the coming weeks.
Four more possible Villa Park arrivals
After signing Wesley Moraes from Club Brugge, Villa are still thought to be in the market for another striker. Austin has previous Premier League experience and is available to leave St Mary’s this summer.
Dean Smith is keen on Leeds midfielder Phillips, and with the 23-year-old reportedly rejecting a new deal, the youngster could well be making a move to Villa Park ahead of the new season.
Burnley keeper Heaton is a target for Villa after they ended their interest in Stoke City’s Jack Butland. The England international has plied his trade at Turf Moor since 2013.
Egyptian winger Trezeguet is thought to be available for £10m this summer from Turkish side Kasimpasa, with Villa, Everton and Watford all keen on the player.