De Rossi has failed to win over coach Zdenek Zeman this season.
"There is nothing to clarify on De Rossi. The Coach makes his decisions independently and he explained his choices in midfield," director general Franco Baldini told Sky Sport Italia.
"De Rossi is extraordinarily important for us, but how much he earns is irrelevant. In the first half we created many opportunities, even if we were unable to score, and after the break we felt the pressure of wasted chance