The Wallabies lock is a free agent after Western Force lost their Super Rugby status and has been linked with a move to Melbourne Rebels.
Munster are among the European clubs who are said to be keen to sign the 25-year-old, who has been a key player for his country under Michael Cheika.
Coleman faces a dilemma over whether to continue playing at international level or move overseas and will not rush his decision.
"In terms of me, personally, there is a lot of water to go under the bridge and I am just assessing my options at the moment," he said.
"I love playing for the Wallabies and what I want to do, for this year, is play the best rugby I can, for my country."
Coleman also backed the proposed introduction of a new Indo-Pacific Rugby Championship – formulated on the back of Force being cut from Super Rugby – next year.
He said: "I think it's a great idea, the new competition, but like I said, I'm just assessing my options and I am really loving my rugby here at the Wallabies."