Tottenham are poised to sign Sunderland's England Under-21 goalkeeper Ben Alnwick in January.
Alnwick, 19, is currently sidelined with a shoulder injury but will join Spurs when the transfer window opens, as the Londoners continue with their policy of pursuing the finest homegrown talent.
A swap deal will see Hungarian stopper Martin Fulop moving to the Stadium of Light on a permanent basis, while Sunderland will also collect around £1million.
Fulop joined the Black Cats on loan last week to provide back-up for Darren Ward, whose excellent form in recent week has kept Alnwick out of the starting XI.
Sunderland manager Roy Keane said: 'Ben has been frustrated at not playing first team football recently.
'He has been to see me a few times, so it looks as though he'll be going on his way.
'It looks as though it's a done deal, but you never say for certain in this business because there's always something that can go wrong.'
Alnwick, a Sunderland-born academy product, has attracted interest from both Tottenham and Arsenal but is set to become understudy to Paul Robinson at White Hart Lane.
Spurs boss Martin Jol guided the club to fifth spot and UEFA Cup qualification last season after building a squad packed with young English players, among them Aaron Lennon, Jermaine Jenas, Jermain Defoe, Ledley King, Robinson and Michael Carrick, who joined Manchester United in the summer.
Keane, meanwhile, believes the acquisition of Fulop will prove an astute signing for the Black Cats.
Keane said: 'Marton has joined us on loan until January, but yes, we definitely want to take him on full-time.
'He's a very big lad at 6ft 5ins and I think that's important in this division when you have so many crosses coming in and high balls into the box.
'He's a young keeper who is hungry and ambitious to do well and he's exactly the sort of player that we want here.'