The Republic of Ireland international is one of several Preston players attracting interest and North End chairman Maurice Lindsay confirmed he had shunned a bid from Town, who missed out on Swindon striker Charlie Austin last week.
He said: "Ipswich wanted to sign St Ledger and we said `no'.
"This shows we are not a selling club, we are trying to strengthen in our battle to avoid relegation.
"We want to turn the ship round here, give ourselves the chance of staying in the Championship."
Source: PA
Source: PA