However, with Everton boss Sam Allardyce confirming that Barkley would leave the club it looks like the Blues are in prime position as of right now.
Barkley was close to joining Chelsea in the summer but pulled out at the last minute after deciding to first recover from his long-term injury and then decide upon his future.
Chelsea are set to take their season's spending past the £200m mark after making a £15m bid for Everton midfielder Ross Barkley.
Chelsea head coach Antonio Conte has been vocal in recent weeks about his desire to see the club strengthen his squad "in the numerical aspect" during the January transfer window, and the Blues are expected to actively explore other deals throughout the month.
Sadio Mane and Mohamed Salah
Barkley has only six months remaining on his contract, which means a reduced price could be agreed between the clubs after Chelsea offered double the amount in the summer.
Barkley has rejected a new deal at Everton, who he joined as an 11-year-old in 2005, with his current contract due to expire at the end of this season.
Barkley - who has missed all season with a hamstring problem - is now back to full fitness and will be ready to play as soon as he completes the move. The 24-year-old England global, who is out-of-contract at the end of the season, was keen on a move to Spurs - but they were not willing to offer him more than £100,000-a-week.