EX-Huddersfield Town striker Theo Robinson has completed a permanent switch to Derby County for an undisclosed fee.

The 22-year-old moved to Pride Park on loan in February, just two months after he signed for the Lions from Town.

Robinson hit three goals in eight starts for Millwall and has scored twice in 13 appearances for County.

Robinson joined Huddersfield in 2009 from Watford.

He scored 13 in the league in 38 appearances for Town before moving to Millwall.