David Blatt has been diagnosed with multiple sclerosis, the former Cavaliers coach revealed Monday.

Blatt, 60, is currently coaching the Greek club Olympiacos in the EuroLeague and plans to continue coaching while he fights the disease, he said in a letter released by the team.

“I am a coach and my job is to lead and teach and inspire a lot of people. Not being as agile or active doesn’t affect my ability to do those things,” Blatt wrote. “I am fortunate. I have great doctors trainers physical therapists and management that accept my disabilities and help me overcome. How could I possibly complain? I absolutely cannot and will not. It’s wasted effort and while I ask my players and staff to be the best version of themselves, I must ask and even demand from myself to do the same.”

Blatt said he was diagnosed “a few months ago” with primary progressive MS, which is causing him fatigue, balance and strength issues, primarily in his legs. He said he has taken on a regimen of strength and balance exercises to keep active.

He was one of the top coaches in the EuroLeague before taking over as the head coach of the Cavaliers in 2014. Soon after, LeBron James returned to Cleveland and the Cavaliers lost to the Warriors in the 2015 NBA Finals. They were 30-11 midway through the next season when Blatt was fired and replaced by his assistant Ty Lue. The Cavaliers went on to win the franchise’s first championship.

Blatt returned to the EuroLeague in 2016 with Darussafaka Tekfen Istanbul and took over Olympiacos last summer.

“When I got over the initial shock and pain of understanding how this would and could change my life from today going forward, I decided I wasn’t giving in to anything,” Blatt wrote. “I was only going to adapt and adjust and find ways to continue my life as normally as possible.”