Premier LeagueIt was a tough decision to leave Derby - Frank LampardFrank Lampard admitted it was a tough decision to leave Derby after he was announced as the new Chelsea managerAStvUpdate: Jul 4th, 2019 10:35 EDT0Tagged in:Frank LampardChelsea FCDerby CountyPremier LeagueLigas fútbolEquiposFútbolCompeticionesDeportes