Clarke will speak to fans for the first time since being elevated to the Lions' senior list last week.
At 195cm, he is a developing key defender who had his first taste of senior action during the recent NAB Cup competition.
He will stay online for 30 minutes to answer questions from fans.
Simply CLICK HERE at 2:30pm (QLD time) this Wednesday 27 March to ask Justin your questions.
You can also CLICK HERE to view some of the transcripts from recent chats with players.
