Celtic have already completed a deal on a potential Kieran Tierney replacement.

While the Scottish giants have not agreed a deal to sell the much wanted Scottish left back, they have already secured a player who could replace him.

Boli Bolingoli-Mbombo has signed for Celtic from Rapid Vienna.

The 24-year-old defender comes for a fee that could rise to £3 million.

Arsenal and Napoli are chasing Tierney, but no club has put in a bid that comes close to Celtic's valuation on the player.

Bolingoli-Mbombo may have to complete with Tierney for a first team place if the latter ends up staying.

But most experts believe that Tireney will be sold before the close of the summer window.