According to Kicker, Belgian international winger Thorgan Hazard (26) is planning to leave Borussia Monchengladbach, and eventually join Dortmund side, but only in summer 2020, after having left Die Fohlen, which he's been playing for since 2014/15, as a free agent. The player has recently been linked to Atletico Madrid, Liverpool, Napoli, and AS Roma.
Source: transfermarketweb.com