The 27-year-old was substituted in the 33rd minute after having scored the opening goal of the match in the opening 20 minutes of the encounter.
Osimhen seems likely to miss next week's opening match of the UEFA Champions League against Portuguese giants Sporting Lisbon next Tuesday and may jeopardize his participation in the Super Eagles upcoming 2027 Africa Cup of Nations qualifiers.
The Turkish giants have now issued an update on the status of the Nigerian's injury, with further assessment still to be made.
"Victor Osimhen, one of our football players whose MRI and advanced examinations were completed at our sponsor Acıbadem Hospital, was found to have advanced-moderate strain (bleeding and strain) in the right adductor muscle group," read the statement.
Both club and country will be hoping the player has suffered a grade 1 strain which can take from one to three weeks to recover.
Nigeria will host Madagascar in their first AFCON 2027 qualifier before travelling to face Guinea-Bissau in Group L.
Victor Boniface's uncertain situation at Bayer Leverkusen has taken another intriguing turn after the Nigerian striker wiped his Instagram account and posted a cryptic message thanking God for standing by him.
Peter Odemwingie believes Nigeria should rethink how it chooses its national team captain, arguing that current club level and competitive ambition should carry more weight than past achievements.
Sadiq Umar is set to miss Nigeria's September 2027 Africa Cup of Nations qualifiers after suffering a hamstring injury at Valencia.
Nigeria international Taiwo Awoniyi is already feeling the pressure to deliver for Coventry City after admitting he should have been more clinical in their 1-0 defeat to Hull City this past weekend.
