With starting striker Carlos Bacca off to Milan, Sevilla are looking for replacements up front and are reportedly interested in Soldado, who was electric in Spain for Valencia but has been absolutely awful since his transfer to Spurs. Most importantly, Sevilla is said to be willing to pay the full amount of Soldado's £40k/week (after-tax) wages.
The reported price is £11m, which falls well short of the £26m that Spurs reportedly paid for him at the time of his signing. However, more recent speculation suggested that Spurs in fact only paid £13m up front for the striker, with the remainder tied up in unknown incentives. Most of which, we assume, Soldado didn't meet. In this light, recouping £11m for Bobby Soldier isn't bad at all.
Sevilla is a very good club – you can't win the Europa League two years in a row and not be good – and will be playing in the Champions League next season. A move back to Spain might be the thing to kick Roberto's career back on track, though it's important to note that this is, as of now, only a rumor.
I think I can speak for most of us here in saying that it's probably time for Roberto to go, but that we'll wish him well if he does leave.