Pundit Paul Merson has stated that he thinks Chelsea could be about to make one big signing from the Premier League this summer. He told SportsKeeda that he believes the Blues are in the running to complete a deal for Ivan Toney from Brentford. Toney has returned to action with a bang in recent weeks following his suspension that delayed his start to the season. Attention has already turned to the upcoming transfer window, with even manager Thomas Frank admitting it was likely that he will be on the move. Chelsea have been long-term admirers of the player, with themlooking to add to their fire…