McDermott hopes his men have turned the corner after they ended a seven-match losing run and moved off the bottom of the Barclays Premier League with a goalless draw against Swansea.
Midfielder Jimmy Kebe recently criticised Russian owner Anton Zingarevich for not splashing the cash during the summer after the club won the npower Championship.
With Reading still six points off safety at the halfway stage, McDermott wants to inject some top-flight experience into his squad during the transfer window.
"We are talking at the moment regarding players. If we could bring in two or three players that could make a difference, it would be useful to the squad," McDermott said.
"We don't generally deal in big prices. We try to get players that are available. I'd like to bring in two or three with a little bit of experience at the level.
"Having said that, if we can bring in someone from somewhere who we think has potential and can play for us, then fine and that's what we have done with the group now."
McDermott played down reports Reading could sign former Arsenal forward Andrey Arshavin.
Asked if there was any chance, McDermott said: "I don't think so. At this time of year you hear lots of rumours. I have heard that one."