After an earlier stint with
The 20-year-old came off the bench to help his Portuguese side recorda 5-3 win over Pacos de Ferreira.
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The Ghana international showed glimpses of his old self after he was introduced on 70 minute Mensah has rejoined the club on a season-long loan deal from Spanish giants Atletico Madrid.
Two seasons ago, Mensah scored five goals in 30 league appearances for Vitoria Guimaraes before his transfer to Spain.