Adrian, West Ham's goalkeeper, took to Twitter to respond to the owner David Sullivan's claim that Joe Hart is the "best goalkeeper" he has worked with.
Hart, who has signed for the Hammers on a season long loan, was announced on the 18th July after much speculation about where he might end up.
Sullivan gave praise to Hart as he posted his thoughts on the club's website. They have previously worked together at Birmingham City where Hart was also signed on loan.
Sullivan's remark agitated Adrian leading to his outburst on Twitter where he said: "
The pair will meet for the first time as team mates once Hart lands in Austria.