Player contracts on career mode

I started a manager career with Bromley on career mode. When I try to extend player contracts, the players refuse slight decreases in pay and demand extremely high signing on bonuses. One player wouldn't go from £4,700 to £4,500 and wanted a £175,000 signing on fee...... Bromley literally start with only £1m. It's impossible to play with small teams. Is there a way to get players to sign extensions easily like the old fifa games?