MARCUS RASHFORD revealed where he got his inspiration for the outrageous free-kick he scored against Chelsea. The Manchester United star’s absolute thunderbolt found the back of the net from fully 35 yards out in Utd’s 2-1 win – drawing comparisons to Cristiano Ronaldo’s goal against Portsmouth. It was enough to give Ole Gunnar Solskjaer’s side their third straight win on the road and book a Carabao Cup quarter-final spot against League Two Colchester. Rashford has been in and out of form lately but, like his club, may have turned a corner with the triumph at Stamford Bridge.The 22-year-old took to Instagram to celebrate his strike – and let slip where he learned his perfect technique. Rashford referenced his brother and agent Dwaine when he wrote: “Class win. Class support. Class night. Hoe you enjoyed your bday @dwainemaynard.” Leicester star James Maddison – who is top of United’s transfer wish list and could complete a deal within the next year – was one of those to reply. He posted: “Nah that free kick.”And Rashford wrote back: “@madders been watching you mate.” Boss Solskjaer marvelled at the goal but said he would still like the striker to score simpler goals. Speaking about…