Southampton boss Nathan Jones says he's reluctant to rush the introduction of Mislav Orsic.
The striker was signed last week from Dinamo Zagreb.
After the FA Cup win against Crystal Palace, Jones said: "Again, we just have to be careful because he's played in the World Cup all the way to the third-place play-off match.
"Then he's had a bit of time off, so we've got to build him up, otherwise if we try to push him in too quickly he'll pick up an injury and then we won't have him for a period of time, so it's all about managing it."