Ryan Walters had his contract on Friday approved by the Board of Trustees as the Purdue coach continues to build his new program.

Walters will receive $4 million per year in the 5-year deal, and there is a $1.5 million performance base potential for academics, team and personal accomplishments, On3 reported.

“It’s a standard contract form for head coach these days,” Purdue Athletics Director Mike Bobinski told On3. “It’s very similar to what we had in place with previous head coaches. There’s nothing I think that’s particularly unique or distinctive in terms of the elements. Head coach contracts are pretty much what they are these days.”

The assistant coach salary pool is $5.5 million, according to Bobinski, a notable improvement from former coach Jeff Brohm’s assistant pool, which would have been $4.6 million this year had he remained at Purdue instead of leaving for Louisville.

“The thing is, we never used all of the money,” Bobinski said.

Assistant coach contracts have yet to be signed, but it’s believed that offensive coordinator Graham Harrell, defensive coordinator Kevin Kane and associate head coach/receivers coach Cory Patterson will have 3-year deals. The other assistants are projected to have 2-year contracts.