City's appeal over their Champions League ban will influence whether Kevin De Bruyne stays at the club, according to Roberto Martinez.Belgium coach Martinez knows De Bruyne well through the national team, and has also discussed the player with Pep Guardiola.As it stands, City are banned from UEFA competitions for two years but have told their players that they are confident that decision will be overturned; the Court of Arbitration for Sport will hold a hearing on the matter next week.Losing