The Reds waited until the final few weeks of the window to add to their squad due to uncertainty over the ownership and management.
The arrival of the Al-Hasawi family as benefactors and appointment of Sean O'Driscoll as boss led to a string of late signings, but Burt has stressed that their 11 recruits were all well considered, rather than panic buys.
"The players that we brought in weren't just picked out at random, we'd been scouting them for years," he told the club's official website.
"Billy Sharp had been mooted at this club for two or three years and the family made it happen for us. Although we had to make 11 signings, we had good knowledge of the players we were going to sign."