Middlesbrough will not be offering deals to trialists Mirko Pieri and Jackson Mendy.
The pair, both left-backs, played 45 minutes a piece in the 2-0 friendly win against Sachsen Leipzig on Wednesday night.
Boss Gordon Strachan told Boro's official website: "We don't think we'll be taking either of them."
Boro currently have cover at left-back in the shape of Andrew Taylor, Jonathan Grounds and Joe Bennett.
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