Clarke worked with Suarez at Anfield and says the controversial striker is key to Liverpoolâ€™s rise back to the top.
The Baggies boss, whose side visit Liverpool today, said: â€œLiverpool want to be back in the top four.
â€œIf you want to be a big club you have to keep your best players.
â€œIâ€™m not sure exactly where Luis stands in the rankings of the worldâ€™s elite band of players, but he is certainly in the top 10.â€™â€™
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