dpaDe Jong, 21, has been linked with several clubs, including Newcastle United, as he looks to capitalise on a season that saw him score 25 goals in 31 Eredivisie matches.
And with Gladbach coach Lucien Favre looking for added firepower in anticipation of a Champions League campaign, De Jong has emerged as the prime target to replace Marco Reus, who joined Borussia Dortmund this summer.
Kicker claimed that Twente have accepted a €14 million bid, although chairman Joop Muntermann had been holding out for 20m.
Gladbach finished fourth last season and will enter the Champions League at the third qualifying round.
