TITLE: GCN CIRCULAR NUMBER: 6964 SUBJECT: GRB 071021: retraction of Faulkes Telescope South candidate DATE: 07/10/21 18:17:51 GMT FROM: Cristiano Guidorzi at INAF-OAB C. Guidorzi (U. Bicocca & INAF-OAB), A. Melandri, I.A. Steele, R.J. Smith, C.J. Mottram, M.F. Bode, D. Carter, S. Kobayashi, D.F. Bersier, C.G. Mundell (Liverpool JMU), A. Gomboc (U. Ljubljana), P. O'Brien, E. Rol, N. Bannister (U. Leicester) report: The fading optical candidate reported in our previous message (Guidorzi et al., GCN Circ. 6959) has been found to be spurious due to technical problems. We apologise for the inconvenience caused.