MU18 | 20 players called into Cork training camp
It's an opportunity for O'Brien to look at players involved in the Ireland underage international set-up as they get together for the three-day camp.
The young Boys in Green will then play an FAI ETB selection - made up of players from ETB centres from around the country - at Turner's Cross on Wednesday afternoon.
Eight League of Ireland teams are represented in the MU18s panel.
Goalkeepers: Ryan Delaney (Cork City), Fintan Doherty (Derry City)
Defenders: Finn Cowper-Gray (Shelbourne), Ruadhan Kane (Bohemians), Darius Lipsiuc (St. Patrick's Athletic), Dan McHale (UCD), Sean McHale (St. Patrick's Athletic), Senan Mullen (Dundalk), Luke O'Brien (St. Patrick's Athletic), Lewis Temple (Shelbourne),
Midfielders: James Byrne (St. Patrick's Athletic), Pharrell Mauel (Shamrock Rovers), Ryan McBrearty (UCD), Stephen Mohan (Shelbourne), Liam Murray (Cork City),
Forwards: Jason Folarin Oyenuga (St. Patrick's Athletic), Darragh Murtagh (Bohemians), Gavin Hodgins (Shelbourne), Franco Umeh (Cork City), Gideon Tetteh (Shamrock Rovers)