A full agreement to this effect was agreed between player and club, sources confirm on Friday morning.
The contract will officially be signed today.
The new deal see Tonali extend his stay at the San Siro to June 2027.
There were rumours of English clubs circling around the midfield talisman this just ended transfer window.
Those rumours have laid to rest now as Tonali is beloved to have had only one option in his head–remaining with the Serie A Champions.