That means next Saturday's home clash against Wycombe could be his last, unless the Pirates can strike a deal with the Royals to extend his stay until the end of the season.
Trollope told the Bristol Evening Post: "There's not going to be a decision in the next day or two. It's going to go to the wire.
"Reading have a couple of issues at their end that they are unsure about, but we have put our hat firmly into the ring and would like him to stay to the end of the season."
He added: "You can tell that he loves it here and he has fitted in with the rest of the group very well off the pitch too. Hopefully it can continue."