According to Italian journalist Schira, Tottenham Hotspur signed Argentine international Senesi for free.

Schira said the deal is done and confirmed! Marcos Senesi joins Tottenham Hotspur as a free agent, with a contract until 2030 (annual salary of 5 million euros).
According to previous reports, Tottenham Hotspur had been in deep contact with Senesi in early April, with Aston Villa, Juventus, and Borussia Dortmund as competitors at the time.
Senesi recently stated in an interview: "AFC Bournemouth has always been very good to me. Although I chose not to renew my contract, they still let me play without any problems until the end of the season.
"Regarding my future, I don't know what will happen. No agreement has been signed yet, but if I can get a call-up, I hope to finalize my future before the World Cup starts."
