Rashford started the season as an impact substitute but his blistering form forced Mourinho to start him ahead of the likes of Anthony Martial and Wayne Rooney as he scored four goals in six games under the Portuguese.

However, the goals have dried up since, with the 19-year-old failing to find the net in any of his last 10 games for either club or country, despite starting all eight of United’s previous games prior to being rested against Swansea last time out.

And Cascarino blames Mourinho for the “deterioration” of Rashford, from the form he was in at the end of last season, to how his is playing now.

“I don’t like the way he’s handled Marcus Rashford,” he told talkSPORT.

“I just thought - start of the season, you bring Zlatan [Ibrahimovic] in, whatever you do get the kid in alongside him. Just give him a chance to show how good he can be.

“I’ve seen Rashford deteriorate quite a lot this year, and there is no other reason because he has been taken out of the firing line.

“Last year he was absolutely sensational at the end of the season for United and now I am looking at a young lad that has been given a new deal, but been taken out of the firing line, not playing much football now.

“He came on for a sub [for England against Spain], albeit not for a long time but he looked completely out of sorts.”

Manchester United transfer targets Show all 6 1 /6 Manchester United transfer targets Manchester United transfer targets Jose Gimenez (Atletico Madrid) The 21-year-old Uruguayan has already played 21 times for his country and has been touted as a future world-class centre-back. Currently on the books of Atletico Madrid, Gimenez is not a regular and a move in January for first-team football would surely appeal to him. Getty Manchester United transfer targets Victor Lindelof (Benfica) The most recent player to be linked with the Red Devils, Lindelof is a 22-year-old centre-back currently plying his trade at Benfica. The Swedish international has been in fine form this season and could be tempted by a move to England in January. Getty Manchester United transfer targets Mesut Özil (Arsenal) The German midfielder has emerged as a shock transfer target for the Red Devils as the Arsenal playmaker demands a substantial increase to his current £140,000 per week contract in North London. Getty Manchester United transfer targets Antoine Griezmann (Atletico Madrid) The French forward had a brilliant season in Spain last year and was top scorer and Player of the Tournament as he helped his country to the final of Euro 2016. Atletico Madrid would certainly not let him go on the cheap however. Getty Manchester United transfer targets Yannick Carrasco (Atletico Madrid) The third Atletico Madrid player reported to be on Mourinho’s wish-list, Carrasco is one of Belgium’s new generation of talent and, at just 23 years of age, has a long career ahead of him. The Belgian is an attacking midfielder who has added a ruthlessness in front of goal to his repertoire this season, contributing nine goals in all competitions. Getty Manchester United transfer targets Bruma (Galatasaray) Galatasaray’s fleet-footed winger is rated at around £21.5m and has impressed in the Turkish league this season, receiving five Man of the Match awards in just ten starts so far. Bruma is a fantastic dribbler who would certainly provide competition for places on the left wing. Getty

Rashford will be expected to start against Arsenal on Saturday with Ibrahimovic suspended and Mourinho reportedly unhappy with Wayne Rooney’s early morning celebrations after England’s win over Scotland.