Tristan vow to Hammers
Striker Diego Tristan is determined to repay Gianfranco Zola's faith in him by "scoring lots of goals" for West Ham.
Former Spain international Tristan - who has been a free agent since leaving Italian side Livorno - has signed after impressing on a two-week trial.
He told the club website: "I had a lot of offers to play for a lot of money but I want to show West Ham fans that I can still play at the highest level."