The Brazilian spent the whole of last season on loan at the Vicente Calderon and has welcomed any potential link with the club
Wolfsburg midfielder Diego says he is flattered by reported interest from Atletico Madrid.
The 28-year-old enjoyed a successful season-long loan spell with los Rojiblancos last season and the Brazilian is more than happy to be linked with the Liga outfit.
He told reporters: “If the rumours are true, that Atletico Madrid have an interest in me, it is always a pleasure to have a club like that looking at you.”
However, the midfielder insists he is fully-focused on the fortunes of his current club, who sit 13th in the Bundesliga table.
“We're halfway through the tournament and I just want to think of my team, who continue to treat me very well,” he added.
Diego has a contract at the Volkswagen Arena until June 2014.