Suzuki Savage LS650?
 

There is a small oil leak from the engine block at the seal, Should I be concerned? Please help. Thank you.

To be honest any oil leak is going to get worse so you might as well get it sorted out, if it gets worse on a run and you dont notice it could run low on oil and damage the engine. Spend a little now or a lot later.

I agree with Colin. It isn't going to fix itself, so you're just buying trouble down the road if you don't get it taken care of. (By the way, I used to have a Suzuki Savage LS650--nice bike!)