Transfer talk surrounding Lewis Hall is intensifying, with reports suggesting Manchester City are monitoring the Newcastle defender closely. The player has caught the attention of several scouts as other clubs prepare for a potentially active transfer window. Manchester City remain optimistic, but the deal is not without hurdles. Arsenal, Liverpool and Man Utd continue to monitor developments and could yet re-enter the race if negotiations stall or valuation gaps remain unresolved. Manchester City 's back line has been a real strength this season, conceding just 0.93 goals per game (28 in 30). Lewis Hall would be expected to slot into that unit and hold his own in an already solid setup. Newcastle continue to be linked with Leandro Trossard, Marcos Senesi and Luis Suarez while Manchester City are also rumoured to be tracking Ousmane Dembele, Felix Nmecha and Sandro Tonali. More on this story as it develops. Need more Manchester City transfer rumours? Follow @PlayerSwitchCom on Twitter for up-to-the-minute news from Manchester City .