The 22-year-old Australia U23 cap joins the Jambos from A-League side Western Sydney Wanderers on a four-year deal for an undisclosed fee.
Calem makes the move from down under following a hugely successful season at WSW where he helped them to the A-League Finals series and was named in the PFA A-League Team of the Year.
A versatile midfielder, he made the breakthrough into the Australia U23 side earlier this year and was part of the Olyroos side that finished third in the Toulon Tournament.
He will now join compatriots Cammy Devlin, Nathaniel Atkinson and Kye Rowles at Tynecastle Park, subject to the approval of the aforementioned paperwork, as the Jam Tarts edge closer to the start of the 2023/24 campaign.
Speaking to the Official Hearts Website, Head Coach Frankie McAvoy said: “I’m really looking forward to getting Calem in and working with him.
“He’s earned rave reviews in the A-League and we think that he can come to Hearts and continue that form and make a real impact.
“Calem has the potential to both improve the team and himself, so it’s an exciting signing.”
Techincal Director Steven Naismith said: “We’ve watched Calem a lot and what has impressed me the most is his versatility in the middle of the park.
“He can fill a variety of different roles in there and his numbers prove that he excels in all of them.
“From the conversations we’ve had he seems like a great lad, he has a real desire to come here and succeed and so he should fit into the dressing room well.
“It’ll be a few days yet before he comes over and all the relevant paperwork is completed, then we’ll integrate him into the group and get him match ready.”
Sporting Director Joe Savage said: “The Australian market is one we now know well, so when the opportunity came up to make a move for Calem, it was too good to turn down.
“We know exactly what we’re looking for in terms of targeting quality players. Sometimes that means having to be patient until the right player becomes available and in Calem we’ve got that, so we’re delighted to get him in.
“He has all the attributes to carry his success from the A-League over to Scottish football and we all feel that he’s more capable of doing so.
“Things are beginning to heat up on the transfer front and we’re hopeful we’ll have even more good news to share in the coming days.”
Image courtesy of Western Sydney Wanderers FC
