Although the extent of his injury is unknown at this stage, the manager is worried that a long absence may be on the cards.
He said: ““We’re still waiting until the specialists see him. But it doesn’t look good. It’s a muscle injury, a big blow for us.
“He’s our key player. We have lost players in those positions and they are hard to replace. As a result we have to change the system.
“But moaning or commenting isn’t going to help us at all. We have to continue to pick up the points.”
It’s a massive blow with both Dimi Payet and Enner Valencis injured and Andy Carroll now has a major role to play over the next few weeks.