Middlesbrough are assuming a strong position as they assert themselves in negotiations with Aston Villa, with the midlands club continuing in their pursuit of Boro’s talented attacking midfielder Morgan Rogers. The Teesside club have reportedly knocked back a third bid from the team led by Unai Emery, and appear under no pressure to sell, instead insisting that the player’s value will have to be met before a deal is done. According to journalist Dom Shaw of The Northern Echo, the latest bid is rumoured to be around £7.5 million up front, with add-ons that would potentially take the deal up to …