The media reported that the player was involved in an argument with his partner Kgosi Ntlhe, South African defense of Scunthorpe United, whose Drinkwater partner would have dedicated "excessive compliments."
Drinkwater ended up outside the premises hit on the ground by about six people, it was reported.
The blows he received on the ankle could leave him a few weeks out of the competition.
"It was a violent attack and there was blood everywhere. The attackers knew he was a Premier player and started jumping on his ankle screaming‘ let's break his legs, "said one witness.