Manchester City assistant manager David Platt has played down fears Joe Hart will be sidelined by a back problem.
But the former England captain believes the injury explains the goalkeeper's error in Saturday's 2-1 win over West Ham, when he allowed Andy Carroll's injury time shot to go under him and in.
Hart suffered a back spasm in the final few minutes but as manager Roberto Mancini had already made all three substitutions by then, he stayed on the pitch.
However, Platt is confident that City, whose next game is at Swansea on Saturday, will not be without their goalkeeper and expects him to be able to take part in full training this week.
Platt said: "I think Joe's back spasmed as he kicked a ball. He is a bit blocked up and will be a bit sore tomorrow but he will be okay on Monday.
"It possibly affected him with the way he conceded. If you look at the ball when it has gone in he can't get down to it.
"Most 'keepers, because they are throwing themselves about left, right and centre during the week will have issues around things like that. It is not much of an issue. It is a 24-hour thing."