With 174 points - including six tries, 24 conversions and 32 penalties - Patchell was the league's top scorer last season.
But head coach Wayne Pivac will hope he can top even that when Patchell is given the opportunity to pull the strings in Scarlets' new-look midfield.
"Rhys is here to play 10," he told Wales Online.
"He certainly brings a lot of speed to the position. In terms of his positional play, in terms of taking the ball to the line, he's a genuine threat at 10.
"He's got a big kicking game, he's got a nice passing game and at training he's directing the troops around the field. He's a real communicator so, so far with Rhys, it's been very positive.
"He's a very confident and bright guy, which is what you want in a 10. They are there steering the ship.
"Communication and organising is a major part of it and he certainly does that very well."
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