Per Bild, the struggling Premier League club are trying to sign Frankfurt keeper Kevin Trapp.
|Kevin Trapp.||Photo: Sven Mandel, Wikimedia Commons, CC BY-SA 4.0|
Erik ten Hag's side have also shown interest in Gladbach's Yann Sommer. United want an experienced no. 2 to challenge David de Gea, who's struggled to start the season. Dean Henderson is on loan at Nottingham Forest for the year.
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