The £6 million-rated midfielder is set to sign a new deal at Celtic, according to the Northern Irishman.
Celtic are set to take on Rosenberg in Champions League qualification, but Brendan Rodgers' options up-front are short.
James Forrest and Tom Rogic are major players at Celtic these days.
The Celtic boss backs Tom Rogic to score over 15 goals this season.
Should Celtic sell Tom Rogic in the summer transfer window?
Brendan Rodgers' Celtic side drew 1-1 against Slavia Prague in a friendly last night.
Celtic star Tom Rogic featured for Australia against Germany in the Confederations Cup on Monday.
Celtic's Tom Rogic scored a brilliant goal during his latest appearance for Australia.
Paul Wade - who won 84 caps for Australia - has backed Celtic star Tom Rogic to captain his country at some stage in the future.
Jackson Irvine has insisted that Tom Rogic can enjoy successful career by staying at Celtic for a long time.