Lamah was left out of the Osasuna squad for Saturday's 0-0 draw with Real Madrid amid reports he is closing in on a move to Swansea.
The 25-year-old has spent the past 18 months with Osasuna and De Guzman has outlined the qualities that the Belgium international would bring to Michael Laudrup's squad.
"He's a strong player. He scores goals, he has a good shot and he's fast," said De Guzman in the South Wales Evening Post. "He would fit in.
"I remember playing against him in Holland. I was playing for Feyenoord and he was playing for Roda JC.
"If he came here, I think he'd fit in with the players here who like to play football."
Lamah was born in the Ivory Coast and would become Laudrup's first signing of the January transfer window, if a deal can be agreed.