BRISBANE midfielder Jarrod Berry has been diagnosed with a mild case of glandular fever.

The 21-year-old is still exercising on a modified program and the club expects him to be back to full health shortly.

The Lions are hopeful Berry might play as soon as February 23 when they take on Gold Coast in a practice match at Metricon Stadium.

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Berry was in the midst of an excellent pre-season, winning the club's 3km time trial early in the New Year.

He has been a lock in the 'best' team in Brisbane's match simulations and is seen as an integral member of the team.

Berry missed Friday's intraclub at Burpengary but watched from the sidelines and was in good spirits as he mingled with teammates and spectators.

Utility Allen Christensen rolled his ankle in the intraclub, but Brisbane expects him to recover quickly.