Sentence:  For financial and competitive reasons, Durant's best move is to stay in Oklahoma City. With the cap jumping $20 million this summer and another $15 million in 2017, Durant can make an extra $40 million by signing a <WSD>one-and-one</WSD> contract with the Thunder in July, then opt out and sign a long-term deal in 2017. 
Meaning of the word marked with <WSD> tags:  (sports) A contract in which the player signs on for one year with an option to stay for a second year.