  The Fermi source 4FGL J1848.7-0129 has been historically related to the
globular cluster GLIMPSE-C01 since its very first detection. Although this
association is widely accepted, as it appears in the most recent Fermi catalog,
it deserves to be revisited given the multi-wavelength evidences and the recent
discovery of variable X-ray sources in the Fermi source region. In particular,
low frequency radio maps from the Giant Metre Radio Telescope in Pune (India)
have been carefully inspected which, together with X-ray data re-analysis from
Chandra, lead us to get a deep insight into the candidates to be associated to
4FGL J1848.7-0129. This results in the discovery of a new X-ray variable point
source coincident with an unreported non-thermal radio emitter, both of them
well inside the 4FGL J1848.7-0129 error ellipse. We analyze and discuss all
these observational facts, and we propose now a newly discovered blazar
candidate as the most promising responsible for the gamma ray emission in the
Fermi source. If confirmed, this result would set constrains on the number of
millisecond pulsars in GLIMPSE-C01 or their gamma-ray emission properties.
