Luton Town boss Gary Brabin has said he is still eager to bring Oxford striker James Constable to Kenilworth Road.
The Hatters had an for the 26-year-old former U's captain, who scored 15 times in League Two last season.
But Brabin has hinted he would be willing to make another approach.
"It's something we're still keen or interested in doing, but we're not throwing all our eggs in one basket," he told BBC Three Counties Radio.
"I've got a good relationship with the people behind the scenes at Oxford.
"We enquired and went a step forward and put a bid in. We haven't done it, there's no bad feeling."
Brabin, who has made bringing in a new forward a priority, has been linked with a host of names, including Forest Green's Reece Styche.
When asked about the 22-year-old, who notched 15 goals for the Gloucestershire side last season, Brabin said: "We don't want to cause any unrest at any other teams, some of the rumours are true, some of them aren't.
"We're getting linked with everyone at the moment, we have showed interest in a few players and we've put bids in for one or two."
Meanwhile the Hatters boss is having to cope with a series of injury and fitness problems.
Defenders Fred Murray and Shane Blackett have returned to training but are not yet match fit.
Captain George Pilkington is still sidelined, despite being expected to have returned by now, full-back Dan Gleeson has suffered a setback in his return from an ankle complaint, while midfielder for at least three months because of a foot problem.