The planned procedure could not wait until the end of the season, but with Arsenal losing 3-1 at Molineux in his absence, he has been straight back out on the training field as the race for Champions League qualification hots up.
His 19 goals this season have been a huge help in keeping Arsenal in contention as their leaky defence have left the Gunners outside the top four positions.
And Emery is hoping that the timing of his hospital visit will limit his absence to just the one match.
“He trained today and if he can train tomorrow, I think we can think he’s ready for Sunday,” Emery said.
Moreover, Arsenal were even considering a double session for the striker to accelerate his chances of getting on the pitch at the KingPower Stadium from the start.
“He could train today,” Emery added. “Then, if he can train normally tomorrow, it’s a possibility.”
With Arsenal suffering back-to-back defeats and rivals Manchester United and Chelsea playing each other this weekend, it is vital that the Gunners get straight back to winning ways and Emery is refusing to tolerate any negativity as a result of their recent wobble.
“We lost the last match and the match before, but our focus is on the present and on Sunday,” he said.
“If we think negatively with the last two matches, we can’t think positively about the games we won against Napoli and Watford
“Each match is a new history, a new test and a chance to move up the table or not. We’re being positive, working, recovering the confidence in our players and in our work. We need to be ready and look forward to playing the next match.”