The performances of the teenager have been a shining light in an otherwise difficult season for Cardiff Blues, who ended the RaboDirect PRO12 season in ninth.
And Patchell's run-outs haven't gone unnoticed with Bennett, who also captain the British and Irish Lions during his playing days, waxing lyrical about the Blues starlet.
"He has all the talent in the world and he is a gutsy player," said Bennett.
"He has to get the experience and the more he plays for the Blues and, hopefully, Wales... he will gain that experience.
"I think Rhys Patchell has got it all. I have seen him put in some great tackling for the Blues.
"Now it is all about experience and he is one for the future.
"I have been very impressed. I think he is a talented player. He is a beautifully balanced runner and is quite a tall man for a fly-half.
"He runs very aggressively at defences and I think he has a lot of things going for him in attack. He kicks quite well, he is strong and very good defensively."
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