Peter Murphy admits he is frustrated at his failed attempts to hold down a regular starting berth for Carlisle.
Murphy, 29, has been switched between defence and midfield in an inconsistent season at Brunton Park.
The Blues' longest serving player has managed only nine league appearances this season despite his best efforts for boss Greg Abbott.
And his role in the 3-1 FA Cup win over Norwich in November appears to have gone unnoticed, much to his frustration.
Despite this, he remains committed to the League One side but hasn't ruled out a move if the situation stays as it is.
"You can understand being dropped if you haven't played well," he told the News & Star.
"But when I came into the midfield for the FA Cup game against Norwich, we won comfortably against a top-three side in this division, so getting dropped after the Hartlepool game after that was quite hard to take.
"And not to play at Everton in the third round was tough as well, because I had played in the previous three-and-a-half games.
"The results had been good, and everyone wants to play against Premier League opposition."
Murphy was linked with a move to Shrewsbury in November but a switch never materialised.
He added: "I can say here and now that I am happy at Carlisle, but I am not happy when I am not playing.
"You can read into that what you like."