Micah Richards has claimed that Newcastle United made a big mistake in their draw against Luton yesterday. Newcastle were very poor from a defensive standpoint against the newly promoted side, but Richards has identified something he thinks should be a big concern for Newcastle fans. Speaking on Match of the Day, Richards was astounded that nobody was helping Dan Burn out defensively despite him getting beat time and time again down that left side. Richards says Newcastle were ‘not good enough’ vs LutonIt was a performance that showed a lot of character and fight to earn a point after being 4-…