Croatian international Lovren, 24, has settled quickly in England since his £8.5m move from Lyon in the summer.
Fonte, who netted twice against Fulham last year, said: "In pre-season Dejan made me work twice as hard.
"He is a great player, a great person as well. The fact that he works so hard and has so much quality makes me want to be a better player and be at the same level as him."
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