Borussia Dortmund midfielder Axel Witsel was hospitalised at the weekend after falling at home.
The Belgium international, 30, left the hospital on Monday, but will not return to action until 2020.
"Witsel sadly will be out for the rest of this year," Dortmund coach Lucien Favre told a news conference ahead of Tuesday's Champions League match against Slavia Prague.
"But there is one positive thing: He's already back home. We can't change it now. It's a shame for him, a shame for us. He's one of...