West Ham United winger Matt Jarvis isn't surprised seeing Steven Fletcher thrive at Sunderland.
The pair played together at Wolves.
Jarvis said: "The price tag is one of those things you can't walk away from but he has showed his class. That's why he's got such a goal-scoring record.
"We had a great combination together at Wolves and I'm pleased he's doing well - just not against West Ham."