Director of rugby Lynn Howells has completed his summer overhaul with the signing of 21-year-old lock Josh Afu.

Afu, who joins compatriots Ngalu Tau, Toma Toke and Hudson Tonga'uiha at the Knights, arrives in Britain this weekend and could play for the club's second string against Worcester on Monday.

Blessed with size, speed and strength, he won a contract with Super 14 side Queensland Reds and after appearing for them as a back rower he gives the Knights extra cover in all back five positions.

He made his debut for Tonga in last summer's Pacific Nations Cup alongside new club-mates Toke and Tonga'uiha.

* Howells has made six changes to his starting line-up for Sunday's trip to London Welsh.
Full back Jamie Lennard, wingers Justin Bishop and Wes Davies, scrum half Chris Hallam, prop Tom Davies and flanker Neil Cochrane all come into the side after missing out on last Saturday's win against Otley.

Knights: Lennard, Bishop, G Hughes, Tonga'uiha, W Davies; Warnock, Albinson; T Davies, Boden, Ta'u, Griffiths, Kenworthy, Grainger, Cochrane, Kettle (captain). Replacements: Toke, Jenkins, Cusack, Smith, Hallam, Armitage, Goss.