The pundit has backed the Baggies this weekend and in general.
And the pundit is confident about the Midlands outfit more generally, suggesting a cup run won't do Tony Pulis's side any harm as he believes they will not get relegated this season regardless.
Lawro told the BBC: "I am sure Baggies boss Tony Pulis will juggle his squad to some extent but I don't think a cup run will damage their survival prospects, because I don't think they are going down anyway."
Pulis's negative style of football hasn't earned him any brownie points with fans. And, if there's anything putting West Brom at risk of going down, it's their lack of goals and attacking zest.
Yet Lawrenson is clearly confident the Baggies will stay up and progress to the FA Cup quarter-finals.
Pulis has experience of reaching the FA Cup final with Stoke - can West Brom do it this time around?
Reading fans will fancy their chances of an upset, of course, as anything can happen on cup day. But will West Brom prevail?