Yarek Gasiorowski, currently with PSV Eindhoven, is the latest name linked with a potential switch to Dortmund. The defender could become a key signing should the move materialise, as the club seeks to strengthen in a key area of the pitch. Dortmund have laid out their intentions, but valuation and timing remain under debate. Arsenal are keeping tabs in case talks collapse or progress slows further. Dortmund's back line has been a real strength this season, conceding just 1.0 goals per game (32 in 32). Yarek Gasiorowski would be expected to slot into that unit and hold his own in an already solid setup. Reports suggest Dortmund are monitoring Joane Kouakou Gadou, Danilho Doekhi and Gonzalo García Torres whereas PSV Eindhoven have not been associated with other players at this stage. More on this story as it develops. Need more Dortmund transfer rumours? Follow @PlayerSwitchCom on Twitter for up-to-the-minute news from Dortmund.