After finishing runners-up to New Zealand in the last two tournaments, England will be hoping to go one better this summer.
Scrum-half Harrison and lock Green are named in England’s starting XV, with centre Forsyth among the replacements for Saturday’s fixture in Rosario. The game is being shown on Sky Sports 2 at 8pm.
Head coach Mark Mapletoft said: "We will give Argentina the utmost respect. We expect them to play a similar style to the seniors and we know that's a tough system to beat.”
England Under-20
15 Tom Homer (London Irish)
14 Christian Wade (London Wasps)
13 Jonny May (Gloucester)
12 Tom Casson (Harlequins)
11 Marcus Watson (London Irish)
10 Freddie Burns (Gloucester)
9 Sam Harrison (Leicester Tigers)
1 Joe Marler (Harlequins)
2 Arthur Ellis (London Wasps)
3 Shaun Knight (Gloucester)
4 Calum Green (Leicester Tigers)
5 Charlie Matthews (Harlequins)
6 Will Welch (Newcastle Falcons)
7 Jacob Rowan (Leeds Carnegie, captain)
8 Jackson Wray (Saracens)
Replacements
16 Jamie George (Saracens)
17 Lee Imiolek (Sale Sharks)
18 George Kruis (Saracens)
19 Alex Gray (Newcastle Falcons)
20 Charlie Davies (Stade Francais)
21 Rory Clegg (Harlequins)
22 Andrew Forsyth (Leicester Tigers)
