England assistant coach Steve Holland has apologised to the squad for leaking team details.
Gareth Southgate's number two addressed the players ahead of a behind-closed-doors training session on Friday morning.
And he said sorry after inadvertently leaking the names and formation likely to be used against Panama.
Kyle Walker claims the squad have still not been told who will start in Nizhny Novgorod this weekend but the fact he felt the need to apologise strongly suggests Southgate's selection was on the paper carried by former Chelsea coach Holland.
Walker said: “It was just before training, just before we went out and did our warm up, he gave his apologies and said it was the first time he had messed up in 20 years, which we had a bit of a laugh about because his refereeing skills are not great.
“It was a bit of banter, we move on and are looking forward to the game now."