West Bromwich Albion will have to give up Romelu Lukaku if they're to sign Tomas Kalas in the summer.

Kalas is being linked with the Baggies after Steve Clarke watched the on-loan Chelsea defender in action for Vitesse Arnhem on the weekend.

The Express & Star says an agreement over Lukaku would rule out any move for Kalas as Premier League sides are not permitted to loan more than one player from the same top-flight clubs.