Source: Evans goes to Niners

Washington defensive end Demetric Evans didn't want to wait until the end of the week to make a decision between going to the 49ers or staying with the Redskins.

Evans opted to go with the 49ers on Wednesday night. He agreed to a two-year, $3.8 million deal, accroding to a source.

The 6-foot-4, 275-pound Evans will be part of the 49ers' rotation of defensive ends in their 3-4 scheme. The move will be a bit of a change for Evans. He's been in a 4-3 scheme with the Redskins.

Evans had his most productive year in 2008. He started 11 games with 33 tackles and 3 1/2 sacks. After playing two years in Dallas, Evans had been with the Redskins for five years.

John Clayton is a senior writer for ESPN.com.