Rangers fans have been frantically updating phone screens in the search for fresh transfer business this summer. But to date only two new names have been added to the squad. Moves for Brazilian left-back Jefte and AC Milan defender Clinton Nsiala certainly fit the club’s revamped player trading transfer model. The two players are also joined by a fresh loan deal for Oscar Cortes which will see the Colombian join permanently at the end of the season. Mohamed Diomande has also completed his £4.3m loan-to-buy deal from FC Nordsjælland following an initial part time switch in January. Now, Rangers…