The West London outfit are said to be in talks with the Spanish champions regarding the possible transfer.
"The interest [from Chelsea] is there, but Atletico do not want to sell," Garcia Quilon told Spanish newspaper AS. "It has been decided to keep most of the group together for next season. We will see what happens with different players, but the intention is not to sell anyone."
Chelsea have already reportedly agreed a deal to sign Atletico striker Diego Costa.