I think Sancho might be staying in Germany for another year. If UTD only want to spend £50m on him (and they sound arrogant in saying so), then either Sancho goes elsewhere or waits another year. He's worth quite a bit more than that even in today's market.
When they spent 80m on Maguire a year ago, Dortmund will use that as a marker for how much to value Sancho