HITC Sport understands Aitor Karanka wants to make sure he has back-up for main strikers.
The ex-Norwich City goalkeeper made his first Premier League appearance since May 2013 in Tuesday night's 1-0 home win as Brad Guzan was left on the bench.
The midfielder recently starred as a central midfielder in the win over Sunderland.
The former Manchester City man bagged the winner against Crystal Palace.
Allardyce took over from Dick Advocaat after eight Premier League games, but says the side hasn't picked up as many points as he thought they would.
Rangers keeper Cammy Bell has been linked with a loan move to Aberdeen.
The defender was secured on loan from QPR on Tuesday.
Tottenham host Leicester City in the Premier League tonight.
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Aston Villa secured a much-needed win over Crystal Palace last night.