Trippier is a boyhood United fan and his family would like to settle back in the Manchester area.
Reports in England and Spain have linked him to United, despite the fact he is a regular for Diego Simeone's La Liga winners.
The situation may have changed, as United boss Ole Gunnar Solskjaer may see right-back as a priority this summer.
Atletico want a significant fee for Trippier and United have other areas of concern in the squad.
The Spanish giants are demanding at least £20m for Trippier, despite him entering the last two years of his contract.
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