Jalen Hurts is expected to miss the rest of the season after doctors discovered multiple blood clots in the Philadelphia Eagles quarterback’s lungs, sources told NFL Network’s Ian Rapoport and ESPN’s Adam Schefter.

Hurts will undergo treatment involving blood thinners that is expected to sideline the three-time Pro Bowler for at least three months, sources informed of the diagnosis told Rapoport and Schefter. His agent, Nicole Lynn, and the Eagles released a statement Monday detailing Hurts’ condition. Lynn and the Eagles said Hurts has deep vein thrombosis and bilateral pulmonary emboli, meaning a blood clot traveled from his legs to his lungs. Hurts is “clinically stable and has no significant functional limitations,” according to the statement, but will not be allowed to participate in football activities while on anticoagulation medication.

Hurts was initially diagnosed with what was described as a superficial blood clot in his calf. That diagnosis occurred in London before the Eagles’ Week 5 game against the Jacksonville Jaguars at Tottenham Hotspur Stadium. Hurts played in that game — a 19-17 loss for the Eagles — despite the initial diagnosis and attempted 40 passes.

Sources told Rapoport that Hurts was in the hospital late night in London and upon returning to the hotel at 3:00am local time, he was able to sleep until the team left for the stadium at 10:30am. Upon arrival, Hurts napped until heading out to the field for pregame warmups. Eagles coach Nick Sirianni did not go into detail about why Hurts was allowed to play in the Jaguars game after he was diagnosed with having a blood clot but maintained that “the health of our players is always at the forefront of our mind” while expressing “full faith” in the team’s medical experts.