Wolves' Bakary Sako has revealed he is mulling over offers from the Premier League but is yet to decide on his future.
Rotherham boss Steve Evans will decide the fate of his out-of-contract players in a meeting on Monday.
Delort has come to the atttention of a host of clubs across Europe following his goalscoring exploits with Tours FC last season.
The 22-year-old finished as top scorer in Ligue 2, scoring 24 goals in 36 appearances, and Tours are facing a fight to retain his services.
Delort is believed to be ready to move on this summer, and Rennes are keen to keep Delort in France and are thought to have tabled a bid for his services.
However, Charlton and Brentford are now weighing up moves as they look to bolster their striking options ahead of the start of the new Championship season.