Southampton manager Claude Puel has revealed that the club's record signing, Sofiane Boufal, will be out for a month with a knee injury.

The Saints signed the 22-year-old forward from Lille for a fee believed to be around £16million, but unfortunately he will now be missing for all of September.

Puel said: "Boufal has a little injury for the moment.

"He worked very well, every day, but now it's important he make good work with a strong knee. When he comes back with us he can play at a good level.

"I don't know [when he will be fit]. I think one month or more to get back to a good level."

Southampton recently lost another summer signing in Jeremy Pied for the long-term with a serious knee injury.