Tottenham Hotspur have completed the signing of Pape Matar Sarr from Metz for £14.6 million-plus add-ons. The teenager will only be able to play for Spurs next season. READ ALSO: ZAPPACOSTA COMPLETES PERMANENT DEAL TO ATALANTA FROM CHELSEA The deal includes a loan back to Metz for the rest of the 2021/22 season. Transfer news…