[He] will be 32 in August and is hoping to earn a one-year extension, in line with United’s general policy with players in their 30s, but Louis van Gaal is considering allowing him to be sold.
If he is sold, presumably Van Gaal is not intending to rely on Wayne Rooney, the underperforming Radamel Falcao and the inexperienced James Wilson to be his only striking options.
Let's take a look at five options from around Europe who could be considered to replace the Dutchman.