By Frank Dalleres In-demand Ipswich Town manager Kieran McKenna has been offered a four-fold pay rise in order to ward off interest from Chelsea, Manchester United and Brighton. McKenna was named Manager of the Year by bosses’ union the LMA ahead of record-breaking Manchester City coach Pep Guardiola on Tuesday, after guiding Ipswich back into the Premier League with consecutive promotions. The 38-year-old’s success has marked him out as a candidate for vacancies at Chelsea and Brighton while former employer United have also kept tabs on the Northern Irishman. Ipswich have bid to retain McKenn…