Johan Mjallby hopes Tomas Rogic can be a 'gem' for Scottish giants Celtic.

The 20-year old Australian is on a trial from Central Coast Mariners and Mjallby has high hopes for the attacking midfielder.

"If he's good enough, hopefully, there will be a good chance we can do something right now instead of the future," the Swede said from Celtic's winter training camp in Marbella.

"I don't know the figures or his contract situation but hopefully he could be a gem for us."

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