David Seaman has suggested that he was surprised to see what Declan Rice did against West Ham on Sunday after helping Arsenal to a 6-0 win at the London Stadium. The Gunners made a real statement with their performance over the Hammers. Of course, West Ham won the reverse fixture and put a large dent in Arsenal’s title push at the same ground last season. Declan Rice was one of the stars of the show in the victory. The former West Ham captain set up two of the goals, with two brilliant set-pieces. And he rounded off the scoring with an amazing strike from well outside the box. David Seaman sur…