The Belgium goalkeeper formally signed for Club Brugge in the early hours of the morning and was due to join 11am training today.
"First I played the Community Shield (on the Liverpool bench) and then I flew directly to Brussels. It was hectic," said Mignolet.
"It is nice to be back in Belgium.
"I can't wait to stand back between the posts. Let those games come, I would say."
Mignolet joins Club Brugge for €7m rising to €9m based on bonuses.
He left Sint Truiden and Belgium for Sunderland in 2010.