Bournemouth have signed Brighton defender Steven Cook for an undisclosed fee after a successful loan spell.
Cook has signed a three-and-a-half-year-deal at Dean Court.
The 20-year-old joined the Cherries on 27 October and played eight times before returning to Brighton for a game because of an injury crisis.
"Was a massive decision for me but couldn't resist playing regular games at a very good club. Onwards and upwards," wrote Cook on Twitter.