Inter striker Diego Milito is set to miss the rest of the season after suffering a cruciate knee ligament injury during Thursday's 2-0 Europa League win over Cluj.
The Argentine had only just returned from injury and was in tears when he was carried off after six minutes at the San Siro.
"It's his cruciate ligament, a new type of injury for Diego, nothing to do with the problems he's had before," coach Andrea Stramaccioni told reporters.
"We're gutted for Diego as a person first and foremost and then of course for what he represents as a player. We need to see when he'll have the operation."