A shake up at Leeds United this summer leaves a number of players in need of a fresh start and also provides clubs with a chance to swoop in.
Success of Millwall and Sheffield United this season shows that Blackburn should think about challenging for the play-offs.
O'Kane would be a smart signing for Blackburn, as his experience could be invaluable.
Two years ago he was a Premier League player with Bournemouth before stepping down with Leeds, and in his first season for the club under Garry Monk he was one of their most important players.
Despite shaky form in the second half of this past season under Paul Heckingbottom he was a regular in the team, but competition from emerging talent Oriol Rey and returning loanee Yosuke Ideguchi puts him under increased pressure at the Whites.
Leeds fans are keen to see fresh faces, and Blackburn could benefit from bringing in the 27-year-old Ireland international.
He would help consolidate their status as a Championship side and if he can re-discover his 2016/17 form, play a part in helping Rovers challenge for a play-off spot.