Manaj could join the Serie A minnows on-loan in January.
“Rey is currently training with great champions at Inter," agent Alberto Maria Fontana told TG24.info.
“He is on loan from Cremonese with option to buy, but I do believe the Nerazzurri intend to make his move permanent.
“Frosinone could be a good solution for a loan spell in January. I played for four years with Frosinone Coach Roberto Stellone at Torino and I know what he can do in terms of helping forwards mature."