 Two further appearances followed, but he then slipped out of the reckoning and was released on 17 September.He joined Leyton Orient on trial on 1 October, signing a one-month contract 2 days later as manager Tommy Taylor wanted cover for the injured Matthew Lockwood.Taylor was sacked soon after, but Herrera impressed new manager Paul Brush enough to earn a second month's contract beginning on 5 November, despite being out with first a back injury and then a toe injury.