Celtic are on course for a history treble this season as they look to seal the league title and the Scottish Cup in the next month.

Celtic have already won one cup this season and are on the verge of securing the title. They would then just need to win the Scottish Cup final, after they beat Aberdeen 3-0 in the semi-final on Sunday.

Regardless of who becomes Celtic’s permanent manager, they will already have their eye on potential signings.

Here are some players who are out of contract this summer that Celtic could look to sign…