Atletico Madrid are eyeing Gremio centre-back Walter Kannemann.
The 27-year-old, nicknamed the 'Viking' in his home nation of Argentina, has already played under Diego Simeone as they were together at San Lorenzo.
Kannemann has a €20m clause, a feasible figure for Atletico, while he has already been quizzed on a possible move.
"I don't know [of the interest], I have no idea of that," he stated to Esporte Interativo.
"Cholo [Simeone's nickname] was my coach at San Lorenzo.
"It was a very short period.
"Now I am just thinking about Gremio and winning the Brazilian title."