Manchester United have completed the signing of former Leeds goalkeeper Karl Darlow, talkSPORT understands.The English goalkeeper joins on a free transfer as he signs a three-year contract with the Red Devils, with an option to a further year.Darlow was at Leeds for three yearsGettyMan United want a homegrown keeper to replace Altay Bayindir as back-up to Senne Lammens.And they’ve found one in Northampton-born Darlow, who claimed Leeds‘ No.1 position last season. He played 24 times after taking the shirt from summer signing Lucas Perri.Darlow became a regular starter in the second half of the Premier League season, helping the club to safety in the top flight.In his 22 league appearances, the 35-year-old kept five clean sheets and conceded a total of 27 goals.The Wales international’s impressive performances during a standout campaign led to interest from Man United, with his contract at Elland Road expiring at the end of June.His role at Old Trafford will be to play second fiddle to the Premier League’s Transfer of the Season, Lammens.Bayindir has played just 17 times for the Red Devils since signing for the club in 2023 from Turkish club Fenerbahce.He’s been back-up to Andre Onana and now Lammens in that time, failing to secure regular gametime at all. And it now seems that Man United are going to move him on.All teams in the Premier League need a minimum of eight homegrown players in their 25-man squad.Darlow helps Man United maintain that number, joining a goalkeeper set-up that also includes veteran Tom Heaton.Bayindir has only played 17 games for Man United in three years at the clubGettyLeeds and Wales goalkeeper Darlow has been signed as Lammens’ new back-upGettyA very rare transferDarlow joining up marks the first time in 22 years that a player has gone from Leeds to Man United.Darlow hasn’t strictly joined Man United from Leeds having been a free agent since July 1.However, his decision to join Michael Carrick’s side may not go down well with the Leeds faithful nonetheless.United and Leeds have a historic rivalry and it’s only been on rare occasions that they have done deals together.Alan Smith’s move to Old Trafford in 2004 was the last time a player joined the Red Devils from their rivals. Smith made the switch in a £7million transfer, signing a five-year deal with United, as Danny Pugh went the opposite way.Players to sign for Man United from LeedsAlan Smith – May, 2004 Rio Ferdinand – July, 2002 Eric Cantona – November, 1992 Arthur Graham – August, 1983 Gordon McQueen – February, 1978 Joe Jordan – January, 1978Before that deal, Rio Ferdinand‘s exit from Leeds to Manchester for £29m in 2002 was the next most recent. Eric Cantona also made the same move in 1992, with Arthur Graham, Gordon McQueen and Joe Jordan the only others to do so.