Both players are hopeful that their problems are only minor, and not as bad as had first been feared.
But if they do turn out to be a matter of weeks rather than days, Glenn Roeder has already said that he would have to bring in a replacement or two as a result.
Explains John, speaking on Monday morning: "They will have a scan today or tomorrow and we will know after that, but it is too early to guess right now."
Meanwhile, John was delighted that Ian Pearce was able to come through his first 90 minutes of first team football in 10 months against Boro unscathed.
"We didn't ask him to come in yesterday, and all the signs look good for him from now on."
Meanwhile, Scott Minto is looking to recover from the injury that ruled him out of the squad on Saturday.
"He trained on Thursday and his calf tightened up," says John.
Meanwhile, Ugo Ehiogu is still recovering from an early clash with Jermain Defoe - not to mention a second sending off in succession at Upton Park.
Club doctor Ges Steinbergs attended to him for several minutes and says: "He had a hole in the side of his nose from Jermain's stud, but I was able to put some stitches in so he could carry on."
Perhaps he now wishes he hadn't!