Redmond trained with the U21s earlier this week and will fly out with the group to Borås later today.
Festy Ebosele, Evan Ferguson and Will Smallbone won’t travel to Sweden.
After meeting with Manager Jim Crawford, it was agreed Ebosele would miss the game due to family reasons.
Ferguson will return to his club for treatment while Smallbone will stay at Southampton due to illness.
The U21s’ game will be live on RTÉ2 with Kick-Off at 5pm Irish time on Tuesday.
Republic of Ireland Under-21s Squad
Goalkeepers: Brian Maher (Derry City), Luke McNicholas (Cliftonville, on loan from Sligo Rovers), David Odumosu (St. Patrick’s Athletic)
Defenders: Joel Bagan (Cardiff City), Eiran Cashin (Derby County), Andy Lyons (Shamrock Rovers), Oisin McEntee (Greenock Morton, on loan from Newcastle United), Mark McGuinness (Cardiff City), Jake O’Brien (Swindon Town, on loan from Crystal Palace), Lee O’Connor (Tranmere Rovers), Joe Redmond (St. Patrick's Athletic)
Midfielders: Conor Coventry (MK Dons, on loan from West Ham United), Dawson Devoy (Bohemians), Gavin Kilkenny (Bournemouth), Killian Phillips (Crystal Palace), Ross Tierney (Motherwell)
Forwards: Darragh Burns (St. Patrick's Athletic), JJ Kayode (Rotherham United), Mipo Odubeko (Doncaster Rovers, on loan from West Ham United), Ollie O’Neill (Fulham), Colm Whelan (UCD), Tyreik Wright (Colchester United, on loan from Aston Villa)
UEFA U21 European Championship Qualifiers – Group F
Tuesday, March 29 | Sweden U21 v Republic of Ireland U21, Borås Stadium, Borås, Sweden, KO 5pm (Irish time) - live on RTÉ2