De Guzman has recovered from the concussion that kept him out against Manchester United and hopes to be restored to the starting line-up.
Jonathan De Guzman is out of Swansea's opener with a concussion sustained on international duty.
Jonathan De Guzman - returning on loan - headlines a group of players confirmed at Swansea City that also includes Jonjo Shelvey, Alejandro Pozuelo, and Jordi Amat.
Birmingham winger Nathan Redmond is a hot commodity this summer. The 19 year-old winger has a year left on his contract and is seen as being ready to make the leap to the Premier League.
With his loan term completed Jonathan De Guzman is headed back to promotion hopefuls Villareal to wait on his future. A further loan or a permanent move to the Swans for between 4M and 7M are also possibilities.