The Players' Player and Supporters' Player of the Season at Franklin's Gardens packs down at number six, just seven days after being involved in his club's first ever Aviva Premiership Final at Twickenham.
And Manoa will join a matchday squad strengthened from the side that were comfortably beaten 40-12 by England six days earlier, the likes of skipper Sergio Parisse, All Black Joe Rokocoko and Samoan Kahn Fotuali'i - the scrum-half who will join the Saints this summer - all included.
If you want to see how Manoa and Fotuali'i get on, potentially against another of the Saints' summer arrivals in Lion George North, the game is being shown live on Sky Sports 1 and 1HD with coverage from 12noon.
BARBARIANS SIDE TO FACE BRITISH AND IRISH LIONS
Hong Kong
Saturday, June 1st, 2013
Kick off 12:30pm
15 Jared PAYNE (Ulster)
14 Joe Rokocoko (New Zealand)
13 Elliot DALY (London Wasps)
12 Casey LAULALA (Munster and New Zealand)
11 Tukudzwa NGWENYA (Biarritz and United States)
10 Nick EVANS (Harlequins and New Zealand)
9 Dimitri YACHVILI (Biarritz and France)
1 Paul JAMES (Bath and Wales)
2 Schalk BRITS (Saracens and South Africa)
3 Martin CASTROGIOVANNI (Leicester Tigers and Italy)
4 Marco WENTZEL (London Wasps and South Africa)
5 Dean MUMM (Exeter Chiefs and Australia)
6 Samu MANOA (Northampton Saints and United States)
7 Sam JONES (London Wasps)
8 Sergio PARISSE (capt) (Stade Francais and Italy)
Replacements
16 Leonardo GHIRALDINI (Treviso and Italy)
17 Duncan JONES (Ospreys and Wales)
18 Andrea LO CICERO (Racing Metro 92 and Italy)
19 Jim HAMILTON (Gloucester and Scotland)
20 Imanol HARINORDOQUY (Biarritz and France)
21 Kahn FOTUALI'I (Ospreys and Samoa)
22 James HOOK (Perpignan and Wales)
23 Mike TINDALL (Gloucester and England)
