Middlesbrough have rejected a £6million bid from Bolton for defender Rhys Williams, Press Association Sport understands.
Wanderers have been on the versatile Australia international's trail for some time, and are now understood to have made their move.
However, npower Championship promotion contenders Boro are under no pressure to sell as manager Tony Mowbray attempts to guide them back into the Barclays Premier League.
One player who is moving to Lancashire is Arsenal's Japanese midfielder Ryo Miyaichi.
The 19-year-old has joined on loan until the end of the season.
He had a successful spell with Feyenoord last season, and returned to make two Carling Cup appearances for the Gunners.
Under Premier League rules, Miyaichi will not be eligible to play for Bolton against Arsenal in Wednesday night's game at the Reebok Stadium.