The 19-year-old suffered a knock in a reserve team game against Wigan on Tuesday night, and was forced to leave the field of play after a heavy challenge.
The Tyneside club have stated that the England under-21 star will be on the sidelines for a few months.
“Sammy Ameobi will be sidelined for a period of time, likely to be a number of months, as a result of an injury sustained in the reserves’ win over Wigan,” an official Newcastle statement read.
The news will be a blow given the fact that Demba Ba is away on African Cup of Nations duty, and may force Alan Pardew to consider buying a new attacker in the transfer window.
Meanwhile, Andy Carroll’s agent has rubbished claims that the striker could be on his way back to Newcastle.
Reports in the British tabloids have linked the under-performing Liverpool forward with a move back to his former club, but this will not be the case according to agent Mark Curtis.
“Andy is happy at Liverpool,” the representative told BBC Sport.
By Gareth McKnight