Reported Reading target Modou Barrow played on loan at Leeds United from Swansea City during the second half of last season.
Leeds United have been quite busy in the summer transfer window so far.
Leeds United signed the 28-year-old on Thursday evening.
Pep Clotet has left Leeds United and has become the Oxford United manager.
Leeds United have made one signing so far in the summer transfer window.
The 32-year-old was on Leeds United's books until 2012.
The ex-Leeds United man would sell the midfielder.
Leeds United announced the Dane as their new head coach on Thursday.
The former Leeds United midfielder has been impressed with another member of Garry Monk's side.
Vieira made his Leeds United debut under Steve Evans less than a year ago.