Atletico Madrid fear they've missed out on Fenerbahce defender Attila Szalai.
The Hungary international has been tracked by Atletico, though is the subject of intense interest from Chelsea.
Chelsea are expected to bid for Szalai in January with Fener under pressure to sell.
Okdiario says signing a centre-back is a priority for Atletico and enquiries have been made after Fener.
However, agents have learned Chelsea are well down the road to reaching terms with Fener for Szalai.