Lautaro Martinez said he hopes Mauro Icardi returns soon as he lent his support to the former Inter captain.
Icardi's future at Inter is uncertain after he was stripped of the captaincy last week and replaced by goalkeeper Samir Handanovic.
Icardi is reportedly set to undergo tests to determine the extent of his apparent injuries and fellow Argentinian Martinez said he and his team-mates are supportive of the forward.
"Today [Tuesday] was his birthday, we said goodbye and congratulated him, he was happy to be with us," Martinez told Sky Sport Italia .
"We will continue to support him, as his future will depend exclusively on his decision and who manages it: not by us team-mates.
"For us he is a very important player. We hope to have him back soon."
Icardi has not played since losing the armband but prior to that, he went seven Serie A matches without a goal.
But the club still claim they want their star man to stay for a long time to come and that they have never doubted the Argentine.
Inter face the return leg of their Europa League round of 32 tie on Thursday against Rapid Wien having claimed a 1-0 result in the first leg without Icardi.
The club then face Fiorentina on Sunday as they look to solidify their spot inside Serie A’s top three.
Inter currently hold a four-point lead over fourth-placed Milan and boast a five-point lead on fifth-placed Roma.