Dic: [The Complete Plain words] Agree

Following the example set by approve, agree is showing a disposition to shake off its attendant prepositions to, on and with, and to pose as a transitive verb. [:]

• "I agree your figures",
• "We must agree the arrangements for this",
• "I agree your draft".

Some correspondents would have me castigate this, but I do not think there is any great harm in it. It is true that established idiom requires [:]

• "I agree with your figures",
• "We must agree on the arrangements" and
• "I agree with" or
• (if from a superior) "I agree to your draft".

But the change has probably come to stay, and will be absorbed into English idiom.

... source: http://www.ourcivilisation.com/smartboard/shop/gowerse/complete/chap908.htm