My own opinion is it should be Ake, without any hesitation.
It offers Laporte the assurances he needs of regular game time, the club not legislating for the return to form of Stonesy and him about to announce a new deal.
Ake can only play on the left of a two anyway, same as Laporte, who is in a different post code, ability wise.
Dias plays both sides, so whether Stones gets injured or Dias does, the left and right pairing is not compromised as much if Laporte plays instead of Dias on the left.
Ake was only ever a squad filler and he's picked up a couple of medals he could never have dreamed of 18 months ago.
Harsh, but we paid £40m for Ake and on top of £70m cash, I think that is a fair deal.
Not on massive money, so hardly impacts Spurs wage bill.