Todd missed Derby's final home game of the campaign, a 1-0 win over Charlton Athletic which saw Mile Sterjovski restricted to just two minutes action from the substitutes' bench.

The extent of Todd's injury is not yet clear but it seems unlikely that he would be risked for the Rams final league game this weekend.

Last week Glory boss Dave Mitchell said 34-year-old former Blackburn captain Todd would be a quality addition, capable of filling one of the central defensive positions vacated through the departures of Hayden Foxe, Nikolai Topor-Stanley and Dino Djulbic.

"The boy Andy Todd, whose playing at Derby, we've been interested in him," Mitchell admitted.

Todd previously enjoyed stints at Middlesbrough, Bolton and Charlton, before moving to Blackburn in 2002, winning Rovers' player of the year award twice and becoming club captain in 2004-05.

He transferred to Derby, though, for the disastrous 2007-08 Premiership campaign, which saw the Rams relegated back to the Championship and was subsequently loaned to League One outfit Northampton until January this year.