Charlie Sheen's lawyer will go to court today in an attempt to change his custody agreement with estranged wife Brooke Mueller, TMZ reports.

Sheen and Mueller have two-year-old twins together. Mueller entered a rehab facility over the weekend after a week of alleged drug binging. Mueller, who currently has custody of twins Bob and Max, reportedly entered the facility as a precautionary step should Sheen's camp request a drug test.

However, Sheen's lawyer will ask the judge to grant both legal and physical custody of the boys to the actor, citing Mueller's alleged drug relapse.

Should Sheen receive custody, he also wants the judge to terminate the child support agreement that has him shelling out $55,000 a month to Mueller.