Stephen Kenny says an approach to Patrick Bamford is 'unrealistic'.
The 27 year old scored 17 Premier League goals for Leeds last season, and qualifies for the Republic of Ireland through a grandparent.
Bamford wasn't included in England's provisional 33-man squad for Euro 2020.
But speaking ahead of this evening's friendly with Andorra, Kenny says Bamford's goal remains England recognition.
After 11 games without a win, Kenny is hoping a victory can be secured tonight.
Ireland midfielder Conor Hourihane says an extended training camp can only benefit the players.
Kick off at the Estadi Nacional is at 5.
Elsewhere, Northern Ireland are away to Ukraine from 7.
Trent Alexander Arnold's England place for the Euros is in doubt.
He limped off late in the game in England's 1-nil friendly win over Austria in Middlesbrough.
It was a bad night for Liverpool full-backs, with Neco Williams sent off for Wales in a 3-nil defeat to France.
While the Netherlands needed a late equaliser from Memphis Depay to salvage a 2-2 draw with Scotland.