Rotherham manager Steve Evans will continue to run the rule over trialists Salim Kerkar and Francois Zoko.
Charlton have released Scott Wagstaff, Ricardo Fuller, Matt Taylor and Salim Kerkar.
Charlton have completed the signing of former Rangers player Salim Kerkar on a one-year contract following a successful trial.
Sky Sports understands that Salim Kerkar has jetted out to Charlton's pre-season training camp and is hoping to earn a permanent deal.
Rangers manager Ally McCoist is hopeful Andrew Little and Salim Kerkar will sign new contracts with the newco version of the Ibrox outfit.
Rangers assistant manager Kenny McDowall has praised the efforts of the club's players in helping those at Ibrox to battle through a testing time.
Rangers winger Salim Kerkar does not regret joining the SPL giants despite seeing no action since his arrival.
Rangers have completed the signing of French-Algerian midfielder Salim Kerkar.
Rangers have pulled out of the deal to sign Salim Kerkar for now as Gueugnon want compensation.
Rangers manager Walter Smith hopes to seal the signing of Salim Kerkar within the next few days.
Rangers boss Walter Smith is hoping to sign Salim Kerkar after the winger impressed on trial.