Newcastle's former England striker and marquee man Emile Heskey will undergo a scan to determine the extent of a quadriceps injury.Heskey, who has scored seven goals for the Jets this season, was substituted at halftime in Saturday's 0-0 draw with Adelaide at Hunter Stadium."Early in the first half my thigh felt tight and while it didn't get worse I could still feel it there," Heskey said."It was one of those ones where you have to decide to come out or carry on and see if you can make it through the match."I thought it was best to pull out in case I made it worse. Hopefully it will be OK."Newcastle coach Gary van Egmond revealed he was considering giving more playing time to Heskey's compatriot and fellow striker Michael Bridges.Bridges 34, has yet to get a start this season and had played just 68 minutes across five substitute appearances before coming off the bench on Saturday.The clever striker produced some deft touches in 30 minutes play, his biggest cameo this season."He was very effective in what he did, from that perspective he's done enough in my books to see him get another guernsey and maybe more time," van Egmond said."He did some really good things out there."Captain and midfield dynamo Jobe Wheelhouse is just one of the players van Egmond believes could return for the Roar clash."Another week under Jobe's belt at least he'll be available for the Brisbane game," van Egmond said."Dom Ritter is another one in that same boat, Scotty Neville another one as well."Hopefully we can get some of these boys back and push for selection."Van Egmond said his players could take some confidence from achieving their first clean sheet of the season at their 15th attempt.Argentinian midfield playmaker Marcelo Carrusca is Adelaide's main injury concern."He tweaked his groin, we won't get a full appraisal of that until an MRI on Monday," Kosmina said.The Adelaide mentor extracted some positives from the Newcastle game, but was disappointed by his team's inability to build on a strong start."We dropped off the pace for some reason,and I know you go through patches in a game where the opposition always come back into it," Kosmina said."The positive side was we did respond, we blocked a lot of shots in that last ten minutes of the first half."There were a lot of good things as much as Newcastle were on top of us."