Shall I name every summer signing from every club that failed too?
Or just start with the Spurs ones so you can see how many flaws there are in your argument
I didn't have to think very hard to come up with those failures!
You don't sign in January. The business is done in the summer to give the signings time to learn their colleagues' names, overcome any language problems, learn drills and set plays etc.
Never (barring the exceptional circumstance I've quoted) buy in January. Always the summer.
Alexei Sanchez a successful January signing - give me a break!