With less than a month of the season to go and no new contract offer on the table, the veteran Bluebirds defender reckons he could be made surplus to requirements at Ninian Park.
Legg will be 37 when the 2003-04 season gets under way, but he insists he is not ready to retire and is convinced he can still do a job for City whether or not they clinch promotion.
The former Swansea City player gave Bluebirds boss Lennie Lawrence food for thought on Tuesday when he netted an 84th-minute goal that sealed City's 4-0 win at Wycombe to keep their automatic promotion hopes going.
"I'm not prepared to hang up my boots just yet and I think I can still play a big part at Cardiff," said Legg, whose Adams Park strike was his first in the league since City's 2-0 win against Brentford on September 17.
"I'd love to play Division One football with Cardiff next season. I played at that level for eight years with Notts County and Birmingham - it's the place to be.
"And my age doesn't really matter. I'm probably still one of the two fittest players at the club."
But with just over three weeks until the end of the season, Legg is fearing the worst. "Realistically, I'm thinking the club would have have offered me a new contract if they were going to," said Legg.
"Last season my contract was extended in February. Here we are in April and you would expect these things to
have been sorted.
"Things change in football and sometimes you have to accept you're perhaps not part of a manager's plans for the future.
"I don't know what's going to happen. Nothing has been said about my situation, so I will have to wait and see."
But Legg, a Bluebird since making a free transfer from Reading in December 1998, insists he is happy to put his own future to one side to concentrate on helping City clinch a place in Division One.
"I can tell you this - I would walk away from Cardiff a happy man if we won promotion," he said.
"My ambition when I joined was to get the club into Division One and if my time is up, I want to go having achieved what I set out to do."
Legg believes City's destiny is back in their own hands after Tuesday's victory compensated for the disappointment of the 2-1 home defeat against Queens Park Rangers.
"We didn't really perform against QPR, but everything clicked into place at Wycombe," said Legg, who followed up goals from Peter Thorne (two) and Alan Mahon to leave City one point off second-placed Crewe.
"It's now all about what we do," he added.