Scouts from Newcastle United, Southampton and West Brom were at Monday’s 2-2 home draw with AFC Bournemouth again running the rule over Blues left-back Aaron Cresswell.
The trio are amongst several Premier League clubs to have watched the 24-year-old in action on numerous occasions this season.
Fulham have also been regular visitors to Portman Road, while Tottenham, Crystal Palace, Cardiff, West Ham and Everton have all been linked at one time or another. Aston Villa made an enquiry in the summer of 2012.
Cresswell, who Mick McCarthy regards as the best left-back in the Championship, signed a new contract until the summer of 2017 in December having been linked with a move to the top flight during the last four transfer windows.
If Town were to finally cash in on one of their prize assets this summer, the Liverpudlian’s former club Tranmere Rovers would be entitled to 20 per cent of the profit the Blues would make on the £420,000 they paid for him in the summer of 2011.
A Football League tribunal set a compensation figure of an initial £240,000 plus milestone clauses, with only a £100,000 payment on promotion to the Premier League not triggered.