Luke McCowan scored on his first start for Celtic as the champions went back top of the William Hill Premiership with a 3-0 win at Motherwell.Lennon Miller had twice hit the frame of the goal for the hosts before McCowan nicked the ball past Kofi Balmer and drilled into the bottom corner from 18 yards out to open the scoring in the 27th minute.Alistair Johnston headed the visitors two up 11 minutes into the second half and they went on to enjoy their most comfortable win at Fir Park under Brendan Rodgers as Republic of Ireland international Adam Idah netted late on.Motherwell had centre-back Liam Gordon receive a VAR-assisted red card in stoppage time to round off their misery.Rodgers had seen his team held to three draws on six previous visits and each of the three victories had come courtesy of stoppage-time winners.The latest trip could have been similar if Motherwell had converted one of their early chances but Celtic never looked back following McCowan's opener and moved back above Aberdeen on goal difference.The Celtic boss went into this game without captain Callum McGregor, who missed out with a hip strain, while Nicolas Kuhn and Arne Engels dropped to the bench.Marvin Kaleta and Tom Sparrow came into the Motherwell team and the home side had the better chances in the opening quarter with Miller at the heart of all the action.The 18-year-old hit a post from 22 yards out with Kasper Schmeichel stranded after Paulo Bernardo had lost the ball deep in his half.
Moments later the midfielder hit the bar after winning a free-kick 25 yards out.Miller also twice threatened from back-post headers and set up Sparrow with a backheel.