George Smith (ankle) and Daniel Powell (hip) are both battling to be fit for this Saturday’s trip to Bradford.
“George twisted his ankle in training,” said boss Jimmy Floyd Hasselbaink.
“It’s not a heavy one but it’s an awkward one. Hopefully he won’t be out for long and it will only be a few days.
“With Daniel it’s a really frustrating one. We get him back and he plays really well and then we lose him again. It’s a problem with his hip flexor but hopefully he should be okay for the weekend.
“We are still looking to add to the squad and I’ve got my phone with me 24/7. We need a little bit more creativity and we need more goals, but after the injury to Aaron Pierre we also need to strengthen defensively too.
“I don’t want the squad to be too big so there will be players go. There has been some interest in a few, some that I’m not prepared to let go and some we will wait and see.”