Davy Glennon will make the switch from the tribesmen.
An All-Ireland Hurling Final Winner with Galway in 2017 will join the Westmeath hurling panel next year.
The documentation required for Davy Glennon to line-out for the lake county has been sent to Croke Park.
He qualifies because his mother is originally from Westmeath, though he won't be available for this years Joe McDonagh cup.
Gerry Russell of the Westmeath Examiner says it's a massive boost: