Firstly, John Stones £50m?.
Walker is better than Seamus.
And Lukaku is still only worth £75m-£80m tops.
Walker isn't better than Seamus.
But, he is England's first choice full-back and has been superb in the last two seasons. He's also only 26.
So, £60m - in this current market, to a top-four (for Spurs) rival - makes sense.