King's Lynn joint boss Kevin Boon says last season's FA Vase semi-finalists will take no chances with a clutch of senior men carrying niggling injuries ahead of today's opening home friendly against Ridgeons Premier Division neighbours Wroxham (3pm).

Boon confirmed yesterday skipper and prolific striker Jack Defty is poised to sit out the next fortnight of pre-season with a knee problem. Wide player Jamie Thurlbourne is also absent after damaging his hip earlier this month. Jordan Young (ankle) has undergone hospital tests and defender Ross Watson (knee) will only be risked if he suffers no reaction to a bout of tendinitis. Boon insists the main priority must be protecting the club's key personnel ahead of the UCL Premier Division kick-off on August 13.

'Pre-season is about fitness and it also gives us a chance to look at some of the younger players to see if they can step up,' said Boon. 'Jack has damaged his knee cap. I spoke to the physio on Thursday and his advice is to stand him down for a fortnight. He's damaged a flat pad on his knee cap area which is causing him some discomfort. Jordan Young went for X-rays the other day and he won't play. Ross is going to have a light training session and he might be available for 45 minutes.

'With JT, it's something he did in our first match at Burton Park. He got a knock, didn't think anything of it at the time, but it has got progressively work. Jamie is hopeful he can get back to training next week but we don't want to bring him back too soon so we'll have four or five first teamers possibly missing.'

Former Wisbech midfielder Callum Reed is also unavailable but Boon has been delighted at the early impact of the club's quartet of new summer signings.

'They've all settled in well,' he said. 'Danny (Beaumont) played his first 45 minutes in the second half at Ely alongside Jack and did well. Robbie (Harris) is chipping in already and that competition for places is what we want in the squad. We don't want players walking into the dressing room thinking they have got the shirt.'