Thauvin joined Newcastle United from Marseille in the summer of 2015, but he has struggled in the Premier League.
"There are many injured [at Marseille] so strengthening the team would not make it worse," Romao told FourFourTwo. "I'm sure that the return of Florian Thauvin would be good for us as well as him."
According to a recent report in The Shields Gazette, Thauvin wants to return to Marseille in the January transfer window.
The 22-year-old winger has created only five chances in 13 Premier League appearances for the Magpies so far this season.
The Frenchman has a pass accuracy of 70% and a shot accuracy of 20%, and has won two headers, 11 dribbles and six tackles.
Thauvin played for Marseille for two seasons, but he did not have a great time at the French club.
The former France international endured a terrible 2014-15 campaign, scoring five goals and creating 53 chances in 36 Ligue 1 appearances.
Newcastle are third from bottom in the Premier League table at the moment with 21 points from 22 matches, just a point behind 17th-placed Swansea City.