Flo was sidelined after just two appearances following his move to during the January transfer window, and weeks of rehabilitation failed to prevent a premature end to his season.
A clause in Flo's short-term deal, which expires next month, was expected to see him leave Elland Road this summer, but he is one of three senior out-of-contract players in Dennis Wise's squad who have not been officially released.
His agent, Gunnar Martin Kjenner, said: "He's still struggling with this injury at the moment and until he's fit, we can't make any decision on his future."
Wise is also waiting to decide on the futures of Matt Heath and Manuel Rui Marques, who are reaching the end of their deals.
Both players are expected to be offered new terms once Leeds exit administration, but Marques is understood to be attracting the interest of a German Bundesliga team.