The former Villa manager has picked the 19-year-old Republic of Ireland Under-21 international attacker as part of a line-up which includes Christian Benteke as the striker up front.
This is the Villans’ starting line-up that Lambert wants to see in the final:
Alan Hutton - Ron Vlaar - Nathan Baker - Kieran Richardson
Tom Cleverley - Ashley Westwood - Fabian Delph
Jack Grealish - Gabriel Agbonlahor
Villa fans will agree with most of Lambert’s selections, although many will want Leandro Bacuna to start at right-back instead of Hutton.
Perhaps Charles N’Zogbia should also be given the nod ahead of Gabriel Agbonlahor.
This is Villa's first FA Cup final since 2000, when they lost 1-0 to Chelsea at Wembley. This is also the first time that the Villans will face Arsenal in the final of the prestigious competition.