Biggar has impressed all observers this season, including Wales coach Warren Gatland.
"We need to look at options at 10," said the New Zealander.
"We see him as a player who is the next generation of number 10s in Wales.
"He has shown all the right signs of a young 10 who is mature beyond his years. We think he is going to have a significant impact on Welsh rugby."
The Welsh management have made a point of flanking Biggar with Lions Test players Dwayne Peel and Jamie Roberts.
Peel relishing return for Wales
"I played a bit with Dan on the summer tour of North America, and he's played particularly well for the Ospreys this season," said scrum-half Peel.
"It's going to be an exciting time for him and I'm sure he'll be an exciting player for Wales for many years to come.
"It's important for the more experienced members of the squad to step up and really lead the team - I'll do that and with Tom Shanklin outside we'll give him some of the experience we've gained.
"I'm sure he won't need much looking after out there and he'll tell people if they do something wrong - he's confident and likes to boss the game, he's very loud on the pitch and understands the game well."
Hook happy to continue at 15
Biggar's precocious leadership skills have been cited by the Ospreys as the reason he has moved above Hook in their fly-half pecking order, and the youngster makes no secret of his verbosity.
"I've got a Lion inside me [scrum-half Peel] and a Lion outside me [inside centre Roberts], with players like that there's always a good chance succeed and do well," he said.
"I'll be my own man. Anyone who knows me and has played with or against me knows that I'm confident.
"I make the calls - that's my job. Whatever experience Dwayne and Jamie have got, the 10 is almost like a general - I'll be in charge and they have to go along with that."
The cocksure Biggar also reserved a line for injured Ospreys, Wales and Lions scrum-half Mike Phillips.
When asked whether it would take time to adjust to playing outside Peel rather than Phillips, he joked: "Hopefully with Dwayne I might actually get the ball!"
This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.