One player close to leaving Swansea is Roque Mesa who is in Spain to have a medical before completing a loan move to Sevilla.
He moved to Swansea from Las Palmas last summer for £11million.
When asked about the move by Sky Sports News, Carvalhal was not prepared to confirm the latest developments.
"It's not official, I can't comment. You can ask me about transfers but I just talk about official things."