Levski Sofia defender Zhivko Milanov, CSKA Sofia defender Yordan Todorov and Litex Lovech midfielder Radostin Kishishev will join Bulgaria's training camp after this weekend's domestic league matches.
Last week, Stoilov named 17 overseas-based players with English Premier League strikers Dimitar Berbatov, Martin Petrov and Valeri Bojinov returning to the squad after recovering from injuries.
Amkar Perm defender Zahari Sirakov pulled out of the provisional squad due to a stomach problem while Energie Cottbus striker Dimitar Rangelov is still doubtful for the Ireland match on June 6 with an ankle injury.
Bulgaria are third in the group with seven points from five matches. Italy top the standings with 14 points from six matches, followed by Ireland on 12. The three teams are still undefeated.
Squad:
Goalkeepers: Dimitar Ivankov (Bursaspor), Nikolay Mihaylov (Twente Enschede)
Defenders: Elin Topuzakov (Hapoel Tel Aviv), Igor Tomasic (Maccabi Tel Aviv), Iliyan Stoyanov (Sanfreche), Zhivko Milanov (Levski Sofia), Yordan Todorov (CSKA Sofia)
Midfielders: Stilian Petrov (Aston Villa), Stanislav Angelov (Energie Cottbus), Dimitar Telkiyski (Hapoel Tel Aviv), Velizar Dimitrov (Metalurg Donetsk), Blagoy Georgiev (Terek Grozny), Radostin Kishishev (Litex Lovech)
Strikers: Dimitar Berbatov (Manchester United), Martin Petrov (Manchester City), Dimitar Rangelov (Energie Cottbus), Valeri Bojinov (Manchester City), Valeri Domovchiyski (Hertha Berlin), Dimitar Makriev (Ashdod)
