Saints after centre-backs

London - Southampton manager Ronald Koeman says he is targeting central defenders after Florin Gardos suffered a knee injury.

Gardos is to miss the next "six to seven months" and with Toby Alderweireld having joined Tottenham, Koeman is scouring the market for replacements.

"That's the priority, to bring in one or two centre-backs," the BBC reported Koeman as saying.

"(The number of defenders) is too small with Maya (Yoshida) and Jose (Fonte).

"OK, we have (Jack) Stephens, we have [Jordan) Turnbull, but they are young and still they have to improve themselves."