moussa sissoko 's reckless lunge on lucas as ` indefensible ' as the newcastle boss refused to make excuses for his captain .
the midfielder was sent off for two bookings in the 2-0 defeat at liverpool sunday night , but he could 've seen a straight red after he caught lucas .
the defeat was newcastle 's fifth in succession and left them with work still to do to ensure they do not get pulled into the relegation battle .