West Ham defender Daniel Potts will remain in the hospital to undergo further scans after being knocked unconscious during the Hammers 5-1 Premier League defeat to Arsenal on Wednesday. The 18-year-old hit his head on the ground as he came away from a challenge with Arsenal defender Bacary Sagna. Potts was eventually stretchered off in a neck brace and brought to a nearby hospital for observation.

After the game, West Ham coach Sam Allardyce confirmed that Potts had suffered a concussion. "Potts was unable to give the correct answers to the questions the doctor asked, which shows a concussion to the brain,” he said. "They put him on the oxygen and strapped him, just to make sure there was no damage to the spine or the neck. He was out for a few seconds, maybe a minute, and was not fully conscious when he came off.

“We were concerned at how long it took,” he added. “They have to make sure they protect the spine the right way, getting them on the stretcher - that is why it took the time it did. Hopefully he will make a speedy recovery. As he lost consciousness it is a minimum of two weeks, I think, before he can play again."