Roger Federer’s season has been put on hold until the summer after the Swiss revealed with a Thursday tweet that he has undergone minor surgery for a knee problem.

The 38-year-old who last competed on the Tour in an Australian Open semi-final against Novak Djokovic – top seed in Dubai from Monday – announced that he will not be back on the courts until the summer grass season.

That could well mean a return in Halle, Germany, starting June 15, likely followed by Wimbledon .

“My right knee has been bothering me for a little while. I hoped it would go away  but after an examination, and discussion with my team, I decided to have arthroscopic surgery in Switzerland yesterday,” Federer tweeted..

“After the procedure, doctors confirmed it was the right thing to have done and are very confident of a full recovery.

“As a result I will unfortunately have to miss Dubai, Indian Wells, Bogota, Miami and the French Open for the fourth time. I can’t wait to be back playing again soon, see you on the grass.”

Federer also had a medical procedure on a knee just over four years ago, when he tore a meniscus while bathing one of his children in Melbourne after losing an Australian Open semi-final.

He was able to play again in April in Monte Carlo.

2020 Australian Open winner Novak Djokovic will headline Dubai Photo Roger Parker International Sports Fotos Ltd

The Dubai event will now be headlined by world No. 1 Novak Djokovic, due to arrive in the emirate later, with a practice court already booked for Friday.