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Arsene Wenger has sent a transfer warning to Jurgen Klopp after Champions League success.
The Reds claimed Champions League trophy for the sixth time with a 2-0 victory over Tottenham in Madrid.
Speaking on beIN SPORTS, Wenger said: "
They need to dominate European football to improve the technical level.
"But they might lose what is their strength at the moment - that solidarity, their fighting spirit. In our jobs, we know we need to improve a team but sometimes, by improving one aspect you destroy what makes you win."