Leeds boss Thomas Christiansen has inherited O'Kane from the previous Whites regime.
Leeds United drew 0-0 at home with Preston North End on Saturday afternoon.
Leeds United won their opening match of the season 3-2 against Bolton Wanderers.
Mateusz Klich seems to be making a positive impression at Leeds United so far.
The Leeds United man appeared to have a fractious relationship with Garry Monk.
Leeds United are gearing up for their first competitive game since Garry Monk quit the club in May.
Leeds United start their Championship season on Sunday.
The Leeds United midfielder has impressed so far this summer.
Leeds United have been linked with a move for Aston Villa defender Tommy Elphick.
Leeds United and Wolverhampton Wanderers could do business this summer.