Where do you get your defining evidence that Jordon Garrick has never played as a centre forward before Justin ? I have just had a look at his transfermrkt page and apparently he has played 20 times as a centre forward.
Ok, well assuming that's accurate it's of course wrong of me to say he's never played there - one or two manager's may well have experimented with having him play centre forward. And then ditched the experiment, as he's been pretty soon been moved back out to the right hand side. Because he's not a centre forward, and Lowe's system is so proudly rigid that a centre forward within it needs to be an expert in that role.