The Villa midfielder has been fast-tracked through the ranks with Ireland but admits that he is unsure where his future lies
A native of Solihull, England, the 18-year-old qualifies for Ireland through his grandparents and has, thus far, opted to represent the Boys in Green at international level, lining out for the Under-17, U-18 and, most recently, the U-21 team.
However, despite admitting that remaining with Ireland was currently the best option for him, the midfielder, who is on loan at League One side Notts County, refused to rule out a potential switch to England, having already spoken with the Football Assocation (FA).
"If I'm enjoying it with Ireland and I won't be pressured into playing for England," Grealish waas quoted as saying by the Irish Independent.
"The English FA met dad and I before this campaign started and told me where I'd be playing for them [U-19 team]. We had already spoken to Noel [King] by that stage and thought, as I'd be with the U-21s, Ireland was the best place for me.
"It's hard to say what's going to happen because I'm only 18, aren't I? For the next couple of years, I want to play for Ireland.
"That's not saying I'm going to go back to England, just that you never know what's going to happen."
Nevertheless, Grealish praised Ireland U-21 boss Noel King and said that the former Derry City manager has been fully supportive of him.
"Noel has looked after me really well, so I've a lot to thank him for," said Grealish. "He has always insisted I should get a chance with the full squad once I keep performing for the U-21s."