The 22-year-old Norwegian defender has been hampered by a series of injuries since signing for the Scottish champions from Stabaek three-and-a-half years ago and turned down the offer of a new deal in February.
After helping Norway Under-21s beat their English counterparts 3-1 in their European Under-21 Championship group stage game in Israel, Rogne was asked about his Parkhead future.
"I still have a month left on my contract so I haven't left yet but it seems that way," he said.
"I am just here to enjoy these Euros, play with my friends and then we will see what will happens afterwards.
"I am not sure about interest from Britain.
"I've got no idea, my focus is on Norway and that is all I am thinking about."