straight to your inboxManchester City's pursuit of Lionel Messi is not expected to stop them from buying another centre-back but the Barcelona saga could have a knock-on effect for other plans.Txiki Begiristain was busy early in the transfer window, securing winger Ferran Torres and defender Nathan Ake to strengthen the squad for next season.The priority for this summer was a long-term partner for Aymeric Laporte at centre-back, with Napoli's Kalidou Koulibaly identified as a target.