Brentford midfielder Adam Forshaw has undergone ankle surgery.
Forshaw, recently voted the Sky Bet League One player of the year, has been playing with an ankle problem for a few months but, with the Bees' promotion now secured, had an operation on Tuesday morning.
He is expected to be back in training in time for the club's pre-season programme.
"Adam Forshaw has today undergone arthroscopic surgery aimed at addressing an ankle issue that has been troubling him many months," Brentford's medical head Neil Grieg told the club's official website.
"The issue arose from a trauma sustained to the ankle during Adam's teenage years with Everton, which has gradually developed and increasingly restricted him.
"During the course of this season we have maintained a constant dialogue with the leading foot and ankle specialist in the country, in order to ensure that we were able to manage Adam's condition, without compromising his long-term health.
"Today's surgery was deemed a success and Adam will now begin a graduated and carefully devised rehabilitation programme over the summer break, with the aim of having him return to the squad during the pre-season period.
"Adam's performances and consistency during the past season demonstrates a great deal of professionalism and commitment from a very talented young man.
"It is these qualities which will aid him in recovery and see him return as an outstanding performer in the Championship and beyond."
Forshaw played 40 matches for Brentford this season in all competitions, scoring eight goals and setting up another five.
Bees boss Mark Warburton added: "Adam has had an outstanding season, culminating in being named as League One Player of the Year.
"Not only is that a marvellous achievement, but through much of the time he has had to endure discomfort with an injury that has been superbly managed by our medical department.
"Adam, with the team achieving the goal of promotion, has now undergone the required surgery and we look forward to welcoming him back for pre-season and to his performing for us in the Championship.
"We wish him a speedy recovery and congratulate him again for his excellent level of consistency throughout season 2013/14."