Catania have only the final step to go to sign Gaston Sauro from FC Basel.
The 24 year-old is surplus to requirements at the St Jakob after the arrival of Walter Samuel and was set to leave for Luzern.
However, Catania (most of whose squad is Argentinian already) swooped in on the (you guessed it) Argentinian defender on a loan with right-to-buy option.
The centre-back is expected to arrive in Sicily on Sunday to ink the deal with the freshly relegated islanders, who are looking to bounce straight back to Serie A. However, they are losing many of their key players with Lopez already signed for Chievo and Lodi being wooed by Parma.