Royals loan-star returns to Fulham
The American shot-stopper has been in impressive form for The Royals keeping four successive clean sheets, but while he could extend his stay at the Madejski Stadium, a return is unlikely.
"The door's not locked, but it's shut," Royals first team coach Kevin Dillon said.
"It's a policy of Fulham's, they let him come to us for a month and then they wanted to sort out a deal. We're not in a position to do that.
"He just got better and better. He's really helped Jamie Ashdown as well. Marcus' distribution was the best I've seen, it was a big plus having him here - his kicking and throwing were superb.
"We'll have to bring someone in, the manager is out looking for someone now, and we'll have to see who we can get."