 Kepa wabaye umunyezamu wa mbere Chelsea iguze amafaranga menshi cyane kurusha abandi - miliyoni 71 zamapawundi - ubwo yayigeragamo mu kwezi kwa munani kumwaka ushize wa 2018 avuye muri Athletic Bilbao, yirengagije umutoza we Sarri washakaga kumusimbuza Caballero. 