Mundo Deportivo says Salisu as part of a five-man defender shortlist for Catalan giants Barcelona.
The 23-year-old Saints centre-back has risen to prominence in his first full season as a Premier League starter, although his form has dipped over the last two months.
However, he had emerged as one of the league's most promising centre-backs throughout the start of 2022 with a stellar performance versus Manchester City.
The report details he is an expensive option for Barcelona, and potentially not in consideration for a transfer as a result.
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