Striker heads north in year deal
The 29-year-old striker passed a medical at Bloomfield Road yesterday and the paperwork has now been completed.
Chopra joined Town from Cardiff in the summer of 2011 and marked his debut for Blues with a brace in the 3-0 win at Bristol City.
He went on to make 81 appearances, scoring 19 for Blues but was told by manager Mick McCarthy that he was free to look for a new club at the of last season.
Chopra was at the Town training ground this morning to say his goodbyes to his former team-mates and the Club staff.