There are two definitive schools of thought -
We must sign a player or we'll be behind the competition and won't qualify for the champions league, that will mean losing players falling behind and setting the club back for years.
We are a decent squad, with a decent Manager who had 2 quiet January windows in the past and we still finished pretty well nonetheless. While a signing would be nice, it's not the end of the world.
I'm clearly in the latter camp but we're not going to convince one another that we're right. If we finish top 4 then the arguments will be the same, one that if we'd have signed someone we'd have finished stronger the other saying considering the circumstances we've faced this season that's a massive achievement.
There is never any resolution to this because no fucker here has any control over who Spurs buys or sells. All you can say is both points are valid, of course having extra depth is never going to hurt but depth for this squad is really in 2 types of players, one that can go straight in to the first 11 which will be about £40m, a potential star £5-6m, maybe less but require development.
In January you can't buy a potential star, there is no point, that's why when we were talking about Sessignon the thinking was that he'd be a loan back player. You have to buy someone who will make an impact on the first 11 and there hasn't been any sign of that type of player this window.
We do need to accept that if we don't make that golden top 4 life will go on, the new ground will be there and that doesn't mean we don't still boast a great squad and manager. At the moment we're only 2 points off the top 4 we can do it but we have not been as consistent this season, we have under performed but in a strange way, by that I mean, we've lost 1 home league game, we're not terrible, we're cumbersome at times, too slow, not creative enough and yes, we still aren't up to much away from home and a lot hinges on the next few weeks as to how we do against the top 6 sides, but the deciding factor won't be a new signing, it will be players regaining form and getting the results we need.