The Football Association is hoping to find out whether Dele Alli will be hit by a FIFA ban for his middle-finger gesture before Gareth Southgate names his England squad on Thursday.
The Three Lions welcome Slovenia to Wembley next week, before heading to the Baltics as their World Cup qualification campaign comes to an end at Lithuania.
A five-point cushion at the top of Group F leaves England on the brink of sealing their place in Russia, but Southgate may have to deal without Alli for some, if not all, of the upcoming international break.