The Mancunian played in 13 Premier League 2 games for United’s Under-23s last term, contributing four goals, before making his move north of the border in January.

Demi was named Man of the Match on his Hearts debut as they beat fierce rivals Hibernian 1-0 in the Scottish Cup.

In the next round of the competition, he netted the only goal of his first spell at the Edinburgh club – a stunning 20-yard strike in a 3-0 home win over St Johnstone, for whom Under-23s team-mate Matty Willock featured.

Mitchell could come up against Willock again this weekend as Hearts host St Mirren, where Willock is currently on loan, on Saturday.