Let's back the truck up here. Not enough info to make an informed decision.
First....who is the 401k with? What are the fees? What ER's?
If it's some crap John Hancock or Mass Mutual or similar, then ok, it may (MAY) make sense to move to an IRA. If it's a low cost Fidelity plan with no fees, then just leave it, but every turn of a new year, go into netbenefits and check that there still are no fees. Why? In some states, 401ks have more protections than IRAs. Also, if your IRAs get too big, then doing backdoor Roths becomes impractical (I have over $1M in IRA....there's no chance I can ever do one).