In December, Carvalhal parted company with Wednesday after two-and-a-half years with the Owls, but the Portuguese was quickly appointed by Swansea and has led the Welsh club outside of the Premier League relegation zone.
The two clubs meet in the FA Cup fifth round on Saturday lunchtime, and Carvalhal has spoken openly about his affection for the Championship outfit.
At a press conference, the 52-year-old told reporters: "We achieved one playoff final, one semi-final and the moments that I had at that club were unbelievable. Very strong emotional moments that make me think that part of me belongs to the club.
"I will be part of Sheffield Wednesday forever. I am working very hard now to be a Jack in the future."
Carvalhal won 56 of his 131 matches in charge of Wednesday.