The 25-year-old Glaswegian has agreed a four-year deal with Albion, and passed his medical earlier today at the American Express Elite Football Performance Centre.
Manager Chris Hughton said: “We are really pleased to welcome Jamie to the club. He is somebody we monitored very closely last season and he was one of Sheffield United’s most influential and creative players.
“He’s a winger who can play on either flank and he will give us extra options in both wide positions. He’s a very good age, an age where he can continue to develop as a player and build on his experience.”
Murphy began his career as a youth team player with Clyde. He switched to Motherwell in 2002 and broke through to the first team in 2006, helping the club reach a Scottish Cup Final and regularly qualify for European football over the next seven seasons.
After a successful spell at Fir Park, Murphy headed south and joined Sheffield United in January of 2013, and has twice helped the Blades reach the League One play-offs.
To date the winger has more than 60 career goals to his name and over 200 appearances; he has also represented Scotland at under-21 level.
Murphy will be eligible for Tuesday’s match against Huddersfield Town.
Don’t miss out on all the latest breaking news where you live.
Here are four ways you can be sure you’ll be amongst the first to know what’s going on.
1 Make this website your homepage
2 Like our Facebook page at facebook.com/pages/Sport-Sussex
3 Follow us on Twitter @SportSussex
4 Register with us by clicking on ‘sign in’ (top right corner). You can then receive our daily newsletter AND add your point of view to stories that you read here.
And do share with your family and friends - so they don’t miss out!