Radio megahalos are recently discovered large-scale diffuse synchrotron sources identified through LOFAR observations. We present MeerKAT L-band observations of the massive galaxy cluster RXC J0528.9−3927, that reveals faint emission surrounding its central radio halo. At 1.28 GHz, the known ∼1.14 Mpc halo is embedded within previously unreported low-surface-brightness emission extending to ∼2 Mpc. The surface-brightness profile of the emission shows a distinct flattening beyond ∼0.55R500
Nearby in the stack
, suggesting that the outer emission forms an additional component. These properties make the cluster a candidate megahalo system and potentially the first detected at GHz frequencies, although deeper multi-frequency observations are required for confirmation.