The Daily Mirror says that Redknapp's assistant Joe Jordan was at Ewood on Tuesday to seen Rovers take on Brighton.
It's not the first time that Rangers have been linked with a move for Dann; he has been a target of the Loftus Road outfit in the past.
Speculation has it that West Ham are not going to budge from their £2million offer for Olsson while QPR are set to offer more like £3million.
Source: RoversMAD
Source: FOOTYMAD
