Not in their official doctrine, but there's nothing inherently preventing them from doing so. Many Buddhists do in fact believe in God and often incorporate the teachings of Buddhism (as well as Confucianism, Daoism, etc...) with another religion (such as Christianity, Judaism) or just a general belief in God (no religious affiliation).
They are not God-centered. In fact you could make the argument that they're not -religions-, they are 'disciplines' or 'philosophies'. But they are not atheistic either. Belief in God is optional.
The word ?legalism? does not occur in the Bible. It is a term Christians use to describe a doctrinal position emphasizing a system of rules and regulations for achieving both salvation and spiritual growth. Legalists believe in and demand a strict literal adherence to rules and regulations. Doctrinally, it is a position essentially opposed to grace. Those who hold a legalistic position often fail to see the real purpose for law, especially the purpose of the Old Testament law of Moses, which is to be our ?schoolmaster? or ?tutor? to bring us to Christ (Galatians 3:24).
Confucianism and Taoism recognize this thing called the Tao or 'the Way'. its sorta like the flow of the universe, the way everything unfolds. some consider it to be a kind of impersonal form of divinity, meaning that 'worship' is unnecessary. but respect is very much condoned. Taoism is all about coming to an understanding of the Tao and living in sync with it, sorta going with the flow. Confucianism is more focused on scion-political interaction, with culture and lite government.
Buddhism recognizes divinity, but is more about profound respect, than worship.