Mowbray added Jos Hooiveld from AIK Stockholm and Thomas Rogne from Stabaek during January, but the Celtic manager has until midnight on Monday should he wish to further bolster his squad before the transfer window closes.
Ramis was not in the Real Mallorca squad for Sunday's game against Xerez as a result of an arm injury sustained recently against Espanyol.
But, having come through the ranks at the club, Ramis has been an important part of Mallorca's season, helping them to fourth place in the Primera Liga.
Ramis, who had a loan spell with Valladolid in 2005, represented his country at Under-19, Under-21 and Under-23 level.
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