Everton has interest in signing Diego Costa, who is expected to leave Chelsea.

Costa has been attempting to return to Atletico Madrid this summer.

“I have always said there will be a warm welcome for every good player here and he is a good player,” said Ronald Koeman.

Everton sold Romelu Lukaku to Manchester United this summer.

“We are still looking to bring in a striker,” he said. “It is not about being unhappy with Dominic (Calvert-Lewin) – I am very happy with him – but he is still young and we need more competition up front. We have tough fixtures and a lot of international players and a lot of players selected for the under-21s – six Everton players with England. For young players the most difficult thing is being regular with their performances but Dominic, like Tom Davies, is doing exceptionally well.”