The agent of Martin Montoya believes Barcelona will be reluctant to lose the fullback in January.
Montoya comes off contract in June and has been linked with Arsenal.
Jose Maria Orobitg told Fichajes.com: "I think this winter, the club will not release Martin. They can always extend his contract ... Montoya is part of a list of non-transferable.
"Then, of course, if in January he has not played at all, maybe things can change, but I think not."
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