Leon Balogun became the club's first signing of the 2018 transfer window after signing a two-year deal in May.
He arrived after spending three years with Bundesliga side FSV Mainz 05, and also had spells with Hannover and Werder Bremen during his time in Germany.
The defender is a Nigeria international, eligible through his father and played in five of Nigeria’s six qualifying games for Russia 2018, helping them to two clean sheets in the process.
The 30-year-old featured in all three of Nigeria's games at the FIFA World Cup and was one of three Albion players at the tournament, alongside Maty Ryan and Jose Izquierdo, who represented Australia and Colombia respectively.
Balogun made his Albion debut against Manchester United, after coming off the bench to replace Lewis Dunk in the 3-2 victory at the Amex.
Internationally, he went on to represent Nigeria at the African Cup of Nations in June 2019.
Balogun completes permanent move to Wigan
Defender to stay at DW Stadium following successful loan spell.
Balogun: Wigan loan spell has been brilliant for me
To say that Leon Balogun’s time at Wigan Athletic has started well would be somewhat of an understatement.
Three and easy does it for Balogun
Leon Balogun picked up his third win and clean sheet in as many matches as Wigan Athletic beat high-flying West Brom in the...
Defender joins Wigan
Central defender Leon Balogun has joined Championship side Wigan Athletic on loan until the end of the season.