Merson wrote in the Daily Star: "They had the money but didnâ€™t do anything â€“ and now Jermain Defoe is out for three weeks.
"What a miss he will be. I think heâ€™s the best English centre-forward we have.
"Heâ€™s quick, a natural goalscorer and he makes good runs. Emmanuel Adebayor is coming back from the African Nations Cup but he doesnâ€™t carry the same threat.
"How Spurs ended up with four players who all play behind the striker â€“ and only one actual striker â€“ Iâ€™ll never know."