No no, I totally have no idea who you are :p

But yeah, I'd give a tentative "sure!" for him. Not perfect, certainly, but familiar enough to be recognizable, and probably enough to pick up a basic understanding as long as it's not terribly complicated conversation... or really conversation about religion and related things that have too many loanwords to figure out by context alone. Probably at that point familiar enough that he could even respond at least on a basic level