Brennan Johnson has made quite the impact off the bench in recent home games at Tottenham Hotspur. The 22-year-old’s latest display came in the 2-1 win over Luton Town, where he was introduced for Dejan Kulusevski at halftime. With Tottenham trailing 1-0, Brennan Johnson came off the bench to force an own goal with a brilliant cross before setting up Heung-min Son for the winner. Johnson faced some early criticism after joining Spurs from Nottingham Forest over the summer. But the winger has certainly stepped up in recent weeks. He’s managed eight goal contributions in his last 12 Premier Leag…