Ricardo Rodriguez has been linked with a move to Germany but Milan manager Gennaro Gattuso is determined not to lose the Swiss full back.
Rodriguez joined Milan from Wolfsburg for €15m last summer and he has been a regular at San Siro, under both Gattuso and previous boss Vincenzo Montella.
Although his performances were sometimes inconsistent, he showed enough ability for both Bayern Munich and Borussia Dortmund to be interested in acquiring his services, according to Calcio Mercato.
Both clubs can offer Champions League football next season whereas Milan only qualified for the Europa League, and they may yet be banned from that competition following a UEFA investigation into the club's finances.