The 26-year-old central defender heads to northern Spain to join a side that finished two places clear of safety last season.
He made two appearances for the Blues following a winter arrival, away at Aston Villa and Swansea City on successive weekends in April 2016, before helping Vitesse win the Dutch Cup on loan in Arnhem the following season. That was the club's first major trophy triumph in their history and earned him a return spell in the Eredivisie in 2017/18.
The American then spent six months in France with Nantes, where he made nine appearances before switching to Reading in the Championship. During 18 months at the Madejski Stadium, he played 42 times, helping the Royals to survival initially and then a 14th-place finish in 2019/20.
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