London, Jan. 7 : Paul Gascoigne’s heart- broken mum collapsed in tears as she watched her grandchild disown her famous son on TV.

According to the Daily Star, the soccer legend’s mother Carol, 61, was “devastated” by the documentary charting his slump into alcoholism.

She watched in dismay as Gazza’s ex-wife Sheryl, 43, revealed that the England legend had beaten her in booze-fuelled rages.

And she broke down as the couple’s 12-year-old son Regan said that he wished his dad would “go away”.

Along with Sheryl and her other children Bianca, 22, and Mason, 19, Regan followed his father to a booze bender in Portugal and told him he was turning his back on him for good.

A family pal said the scenes left Carol distraught.

She said: “She watched it through tears. It was hard enough watching Paul’s bizarre behaviour laid out for all the public to see, but the worst part for her was seeing her grandchild disowning her son. She was so distraught. She was crying too much to speak. It must have been so distressing to see just how sick Paul is.

“She understands how Sheryl and the children feel, but it was devastating to hear her grandson say those things,” the family pal added.

The documentary showed Gazza, 41, desperately calling home between drinking bouts as he toured Europe with heavy metal giants Iron Maiden.

He had briefly moved back in with Sheryl and the children before the bender, following a stint in rehab last year. But, as exclusively revealed by the Daily Star, he stormed out when Sheryl refused to let him sleep with her.

The documentary showed Sheryl and the children take the heart-rending decision to cut him out of their lives.

Gazza is currently undergoing Equine Assisted Psychotherapy at the specialist Stepps rehab centre in Minsterworth, Gloucestshire.

Gazza was not allowed to watch the documentary and has been cut off from the outside world during his 2,000-pound-a-week stay.

He will move to the Sporting Chance clinic, owned by fellow ex-England star Tony Adams, 42, next week. (ANI)