What can I do if a tenant only pays half his rent?

[Brent Ludwig]

I have inherited a tenant that had an unwritten agreement to pay his rent in two payments every other Friday but he hasn't payed both Fridays of any of the months I have had it. He is up to about $2,000 behind but he pays at least half each month can I evict him if I take the half rent or does that matter? Should stop taking the money or just take what he give and start the process of getting him out?