The family of a man killed with a single punch in a bar have described his attacker as an "animal" and blasted his five-year jail term .
Jason Haig, 45, suffered head injuries after being thumped by Thomas Allan during a game of pool, reports Daily Record .
Allan, 52, was sentenced to five years in jail at High Court in Edinburgh yesterday but Mr Haig's family are unhappy with the punishment.
The man's daughter Lauren said: "He winked at us after he got his sentencing.
"That shows how much of an animal he is.

"My dad was an amazing man, family man, strong man, and he was broken by the death of his brother and this man did what he did when my dad was at his lowest."
Mr Haig was punched at Harley’s Sky Bar in Rutherglen, near Glasgow, on September 2 last year.
In the wake of the violence, Allan took a sip from his pint and left the bar.
Speaking outside court yesterday, Mr Haig's partner Nicola Shannon said:"Ridiculous, you say this is justice, that's not justice.
"No, he'll be out before he knows it.

"It's bloody terrible.
"I'm not just saying it because he was my man, but you couldn't get a nicer guy. We've lost him and he's only getting five years."
Allan, a chef from Govan, Glasgow, was called “a ratbag” by an onlooker in the public benches as he was led off to start his sentence.
Sentencing the lowlife, Lord Frank Mulholland said: “Your conduct was deplorable and despicable.”
“You punched him without warning, giving him no chance to avoid your blow.”
The judge said it was suggested that his victim had annoyed Allan by tapping his cue or niggling him.
Allan was heard to say: “He better stay down or I will put him f*****g back down.”
Michael Meehan, prosecuting, said Allan subsequently approached Mr Haig, spoke to him for a few seconds and then punched him in the face with a single blow.
The victim hit the floor and customers went to try to help him as he lay bleeding from his head.
Allan admitted culpable homicide.
Defending the chef, Sarah Livingstone said: “There is nothing that can justify punching anyone. What he should have done is walk away.
"The consequences were horrendous for Mr Haig and Mr Haig’s family.”