He'll join former teammate David Andrews who has started 41 games at center for the Patriots the past 3 seasons after signing w/ them as a 2015 UDFA.

Inside New England's Draft Room as they selected Isaiah Wynn, HC Bill Belichick notifies him that he's now a Patriot, and Owner Robert Kraft adds his congrats:

http://www.patriots.com/video/2018/04/27/inside-patriots-draft-room-round-1

I live in the boston area and I'm fired up. Next year we should have David Andrews, Malcolm Mitchell, Sony Michel, and Isiah Wynn starting on offense. We'll still have some guy who was a backup at Michigan playing QB for a few years, and I guess he's pretty good, but maybe we'll have a shot at Fromm in a couple of years...

https://985thesportshub.com/2018/06/22/patriots-sign-2018-first-round-pick-ol-isaiah-wynn/

Patriots Sign 2018 First-Round Pick OL Isaiah Wynn
June 22, 2018

Per team rules, the terms of the contract were not announced.

https://www.redandblack.com/sports/report-former-georgia-offensive-lineman-isaiah-wynn-inks-rookie-contract/article_72f4e672-7896-11e8-9888-9f209720b136.html

According to the rookie wage scale detailed at overthecap.com, Wynn is projected to make $11.4 million over four years.