Liverpool midfielder Joe Allen has praised 'world-class' Wales teammate Gareth Bale ahead of their match against Scotland.
Tottenham winger Bale branded Scotland midfielder Charlie Adam a coward in the summer, after the then-Liverpool player caught the Welshman with a late tackle in a pre-season friendly.
This Friday's World Cup qualifier between Wales and Scotland is sure to be a feisty affair, but Allen believes his nation hold a trump card in Gareth Bale - a winger he's sure Scotland are terrified to face.
"Gareth is a world-class player who performs every time he goes on a pitch," said Allen.
"I'm sure the Scots will be scared about facing a player of his calibre. Gareth is one of the best players I have had the privilege to play with.
"He can be unplayable. There aren't many in British football who can do the things he can do when he's at the top of his game."
Allen himself has impressed at Liverpool since joining from Swansea for £15m in the summer. The Welsh midfielder followed new Liverpool boss Brendan Rodgers to Anfield, and although the results have been mixed so far, Allen has been a success story.
Tottenham also have a new manager in the form of Andre Villas-Boas, and after a difficult start, Spurs have begun to find their feet under the Portuguese boss.
Gareth Bale has been excellent for the White Hart Lane club, and the Welsh winger will need to be at the top of his game this Friday for his country.
Wales have suffered a stuttering start to their World Cup qualification campaign, losing 2-0 at home to Belgium and 6-1 away to Serbia.
But they have a decent recent record against Scotland, beating their British neighbours 3-0 in Cardiff in 2009.
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