The England international has entered the last year of his contract and he has already turned down a couple of extension offers from the club.
It is now reported that Gallagher was present at Cobham today and he spoke about the possibility of negotiating fresh terms over a contract.
However, the Blues were unwilling to listen. They made it clear that Gallagher should not report for first-team training on Monday.
Atletico Madrid have already agreed a package worth €35m for Gallagher, but the Englishman has yet to finalise personal terms with them.
The La Liga giants have not given up on their pursuit. Gallagher may have no choice but to accept the proposal from Diego Simeone’s side.
Aside from Gallagher, the Blues are aiming to offload Trevoh Chalobah, Armando Broja and David Datro Fofana in the near future.