AS says the USA international impressed Barca sports director Andoni Zubizarreta at this summer's World Cup and is now the subject of enquiries from the Spanish giants.
Johnson has only just left Hoffenheim for Gladbach, but his Bundesliga club won't stand in his way should Barca firm up their interest.
Zubizarreta is in the market for a new wing-back to act as cover for Daniel Alves and Johnson fits the bill.
The 26 year-old has spent his entire pro career in Germany and was actually born in Munich.
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