Pol Espargaro has signalled that Maverick Viñales could make a much-anticipated return to MotoGP action with Tech3 KTM at the upcoming Japanese Grand Prix in Motegi, marking a critical turning point in the rider’s prolonged recovery saga. Viñales, sidelined since July due to a persistent left shoulder injury, has been absent from the past four rounds, with Espargaro stepping in as KTM’s test rider to fill the void. Viñales, who has yet to secure…