have one eye on his

have one eye on his 请结合上下文理解下：With little known publicly about how Chinese leaders reach decisions - or what their real opinions might be - it is difficult to assess the importance of Mr Wen's words,or where they might lead.Perhaps nowhere.The premier is due to retire in two years' time; he might already have one eye on his legacy.前面讲的是温*总*理*关于政-治-改-革-的观点。然后就是最后一句。它要表达的意思是什么？“觊觎他的遗产”好像讲不通吧？