The 25-year-old centre or second rower missed virtually the whole of pre-season training, as well as the first month of the campaign, after being struck down by illness, including the winter vomiting bug. Clubb's 6ft 2in, 16st frame took a battering from the illness but he gradually worked his way back to fitness and made his return in the Broncos' 38-4 win at Salford last Friday.
London coach Tony Rea said: "He put his hand up to play and is a real strong part of the Broncos. He is a terrific footballer and a dominant character in the middle."
He added: "He was ill for three months. He had a couple of different viruses. He had the norovirus in November, got over that, then got another virus, got over that and picked up another one.
"He lost a lot of weight - I'd be guessing but it was a good few kilos - and we sent him for blood tests but it turned out to be pure coincidence, he was just unlucky.
"He's fine now. He had game for the (London) Skolars the week before and was a late call-up against Salford."
Rea is hoping that big win at Salford, which ended a run of four consecutive defeats, will kickstart their season but Hull KR, too, will go into the game in buoyant mood after becoming the first team to defeat title favourites Warrington.
Rovers coach Craig Sandercock was delighted with his side's performance but expects the Londoners to provide difficult opposition.
"We have to turn up with the right attitude and stick to the systems and structures which got us the win last weekend," Sandercock said. "On their day, London are as good as anyone and they're at full strength at the moment.
"Craig Gower is a dangerous player, as is young Kieran Dixon, but they've got some big boys in their forward pack as well. They're a big unit and we certainly need to hold them in the middle of the park."
- Sports & Recreation