I'm curious as for what the specific details for this deal are. Initial free transfer, rising to £10m after 20 matches, with potential of reaching £40. Strangest for me is the length of his contract, only 2,5 years. So if he reaches all these stipulations within this time, we're potentially ending up paying £40m to Spurs and losing him on a free over a 30 months contract. That for me provides a big risk.
But hey, maybe I'm seeing it wrong and there are also stipulations over how long he has to be here (sign a contract extension).
For now welcome Dele Alli, hopefully Lampard can bring the best back out of you.