Troubled Leeds United have added two more players to their squad.
Prutton was out of favour at St Mary's last season
David Prutton and Rui Marques have both signed, meaning six players have joined the club since the transfer embargo was lifted at the end of last week.
Ex-England Under-21 midfielder Prutton, 25, has joined on a trial basis after being released by Southampton at the end of last season.
And 29-year-old defender Marques has signed an initial one-year contract with a view to a longer deal.
Meanwhile four other players have agreed new one-year contracts.
Tomi Ameobi, Scott Gardner, Ben Parker and Gavin Rothery have all extended their deals.