I have a small 100 sq ft mudroom that had 8 x 8 vinyl tiles down on concrete. Then roll-out foamy back linoleum over that. I recently acquire some hand-made terracotta type Mexican tile that was salvaged and so has a thin remnant of old cement on the back of the tile. I can peel up the roll linoleum easy enough although there could be little thin bits of foam back here and there but the vinyl tile would be a chore to remove. I guess my question is, would it be okay to place that tile on the old 8x8 vinyl tile, would it stick? And is the bit of cement on the back of the tile a problem for adherence, would this form a kind of “cold joint”? Thanks for any help.