Celtic are yet to confirm their next manager but must move quickly, with forward Daizen Maeda understood to have issued a challenge to the club over his future.
Among the names linked with the Celtic hotseat is Robbie Keane, while Go Ahead Eagles pair Jari De Busser and Jakob Breum have also been mentioned as candidates of interest.
Breum is familiar to Celtic having been pursued by the club at the start of last season, and the search for a new manager is expected to shape a busy summer window at Parkhead.
On the player recruitment front, Celtic have been linked with Tottenham starlet Alfie Devine and Bosnian pair Benjamin Tahirovic and Zinedin Smajlovic as potential summer additions.
Rangers have already made their mark in the transfer market, completing the signing of Hearts captain Lawrence Shankland, with Dundee’s Luke Graham and Motherwell’s Elliot Watt also attracting interest from Ibrox.
Rangers could also revisit a move for midfielder Dan Neil, and Swedish players Oskar Fallenius and Casper Widell have been heavily linked with a move to the club.
Hearts have agreed a deal with Falkirk for winger Calvin Miller, and Tom Renaud, a French midfielder, is expected to join the Edinburgh club in the coming weeks.
Josh McPake and MJ Kamson Kamara have already committed to Hearts on pre-contracts, while York City’s Malachi Fagan-Walcott is also being targeted after Record Sport revealed their interest.
Aberdeen have completed a trio of summer signings, with Alexander Briedl joining Brad Lyons and Lewis Mayo at Pittodrie, and a fourth deal is reported to be closing, with former St Mirren star Connor Ronan on their radar.
Lewis Mayo, 26, has expressed hopes that his move to Aberdeen can elevate his game sufficiently to push him towards a future Scotland international call-up.
Celtic midfielder Arne Engels is attracting significant attention ahead of the summer window, with AC Milan among the clubs understood to be interested in signing the Belgian.
Engels, who was capped four times by Belgium and missed out on a World Cup Finals place, saw a £25 million January bid from Nottingham Forest rejected by Celtic.
The £11 million signing has reportedly switched agents as he looks to advance his career, with Lazio’s interest having already emerged last month before AC Milan entered the picture.
Rangers striker Bojan Miovski has refused to rule out leaving Ibrox this summer, admitting he wants to play more following a campaign where he made 43 appearances, largely from the bench, scoring 13 goals.
Miovski’s prospects of regular game time appear to have dimmed after Rangers secured the signing of Shankland, who had long been a target for the club, with the North Macedonian having signed under Russell Martin last August.
