Carlisle manager John Ward has confirmed he will not be offering a permanent contract to Stephen Maher.
The 20-year-old has had a trial at Brunton Park but Ward has opted against signing the Irish midfielder.
"I've had a word with him, and it has been a quick decision, but sometimes you find that you are in a position where you have to do that," Ward told the club's official website.
"We have decided to continue to work with the boys that we already have here on this occasion."
Meanwhile, a scan has shown that Peter Murphy's knee injury is not as bad as first feared.
The United defender picked up the problem in training last week and may be fit in time for next weekend's home game against Tranmere.
"The results have shown us that he has a slight medial ligament strain," Ward said. "There could have been a lot of other things wrong in there so that's a relief.
"We don't think he'll be right for this weekend but we'll start to push him on once we get in to next week and see how he is after that."
Richard Keogh came in for Murphy for Saturday's 2-0 defeat by Leeds, making his first league start of the season, and Ward is pleased with the cover in his squad.
"That's why we brought these lads in at the start of the season, because this kind of thing can crop up" he added.
"Richard came in at short notice on Saturday and he covered that area very well.
"The competition for that place will now intensify, and that can only be good news for us as the season picks up pace."