LONDON, Dec 4 (Reuters) - Newcastle United manager Alan Pardew hailed the impact of goalscorer Gael Bigirimana in their 3-0 win over Wigan on Monday but said the Burundi-born 19-year-old should not even be in the first team yet. A Demba Ba double gave Newcastle a 2-0 lead before substitute Bigirimana scored his first for the club with a spectacular, curling left-foot effort from 20 metres. ... More...