Inter Milan midfielder Cristiano Zanetti is being linked with Real Madrid.
Over the last year the Nerazzurri have already signed Esteban Cambiasso, Luis Figo, Santiago Solari and Walter Samuel from the Liga giants, while Ronaldo moved in the opposite direction in 2002.
The rapport between the clubs is strong and there could be another exchange in the offing, as Coach Wanderley Luxemburgo has set his sights on defensive midfielder Cristiano Zanetti.
The Italian international has been pushed on to the sidelines by the new arrivals this summer and was rumoured to be on his way to Juventus, where he would reunite with his former Roma boss Fabio Capello.
However, Inter are likely to favour a switch to Spain to help shave some money off Samuel's recent £10.4m transfer.