Sir Alex Ferguson has called for the Football Association to suspend Swansea captain Ashley Williams 'for a long time' following a clash with Manchester United striker Robin van Persie.
Williams kicked the ball into Van Persie's head while the Dutchman was on the floor as tempers flared in the 1-1 draw between Swansea and Manchester United at the Liberty Stadium on Sunday.
Both Williams and Van Persie were booked for their respective parts in the scuffle that ensued following the initial incident, but Ferguson believes the former is deserving of a more severe punishment.
The Manchester United boss says Van Persie 'could have been killed' by Williams' errant boot and was heavily critical of the Swansea defender following the draw in south Wales.
"[Williams] clearly sees it. [Van Persie] could have been killed. I think the referee has got to look at it," Ferguson told Sky Sports.
"Irrespective of [Williams] having a yellow card, he should be banned for a long time because that was the most dangerous thing I've seen on a football field for many, many years."
Patrice Evra had given Manchester United the lead, before Michu drew Swansea level with his 13th goal of the season.
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