Osano, who had been mightily impressive towards the end of the campaign after an indifferent start to life at Kenilworth Road, joined League Two AFC Wimbledon on a free transfer when his contract ended last week.
Kovacs said: “He’s a superb defender. He’s got everything, pace, power, technique and I think he’ll be a big, big miss for Luton Town.
“But life goes on and I’m pretty sure we will find the next Curtis Osano, or even better.”
For the full interview, see the Luton News/Dunstable Gazette on sale now, while for all the latest Luton Town FC news, reports, stats, player profiles, live match updates, prediction table and a complete fixture list, visit our Hatters Microsite.