The 31-year-old defender is out of contract in the summer which would enable him to move to a new club on a Bosman free transfer.
"We met with Inter last week and we were offered a renewal," agent Victor Becali said. "We discussed a two-year contract, with the option for a third.
"We have been contacted by other clubs and there are offers for Cristian from France, Germany and Spain too.
"Therefore, if we don't reach an agreement with Inter then we will know who to turn to as there is interest.
"We'll give Inter a clear and precise answer in two weeks."