Retired Tipperary athletics coach Jerry Lyons with a young Shane Long.
Shane Long arriving at Wembley Stadium.
The game kicks off at 16:30 and is live on Sky Sports 1.
Super sub Long scored a late goal against Liverpool at Anfield to set up the showpiece with José Mourinho's side.
Southampton team to face Manchester United: Forster, Cedric, Yoshida, Stephens, Bertrand, Romeu, Davis, Ward-Prowse, Tadic, Redmond, Gabbiadini. Subs: Hassen, Long, Rodriguez, Caceres, Boufal, Hojbjerg, McQueen.
Manchester United team to face Southampton: De Gea, Valencia, Bailly, Smalling, Rojo, Herrera, Pogba, Lingard, Mata, Martial, Ibrahimovic. Subs: Romero, Blind, Young, Carrick, Fellaini, Rooney, Rashford.
Manchester United are favourites at 4/5 with Paddy Power, with Southampton at 4/1 and a draw at 4/1. Long is 9/1 first goalscorer, 4/1 to score anytime, 10/1 for anytime assist, 9/1 last goalscorer and 150/1 to score a hat-trick.
Subscribe or register today to discover more from DonegalLive.ie
Buy the e-paper of the Donegal Democrat, Donegal People's Press, Donegal Post and Inish Times here for instant access to Donegal's premier news titles.
Keep up with the latest news from Donegal with our daily newsletter featuring the most important stories of the day delivered to your inbox every evening at 5pm.