"Sons of Anarchy" star Charlie Hunnam harbors no grudges ... giving nothing but props to fellow actor Jamie Dornan -- who will be replacing him in "Fifty Shades of Grey."
But here's the deal ... Charlie hasn't seen a frame of Jamie's work. So how does he know Jamie will kill it? It's all about the person doin' the pickin.'
It's been said Charlie dropped out of the flick because of scheduling issues, but there's a buzz he thinks it would have been a wonky career move.