But the 21-year-old forward made a big impact for Wigan at Salford four months ago, scoring his first try for the club with his first touch of the ball after stepping off the bench.
Baynes, who has agreed a two-year deal with Salford, was one of five props chasing a first-team place at Wigan, with competition from Neil Cowie, Terry O'Connor, Tony Mestrov and the new signing Brett Goldspink.
The former Great Britain captain Garry Schofield, who made three Challenge Cup final appearances at the height of his career, could find himself leading Doncaster on the Wembley trail later this month. The 33-year-old former Hull, Leeds and Huddersfield stand-off has been targeted as the first of a number of major signings by the First Division club following a successful takeover.
Doncaster have been rescued by Westferry Ltd, the company that also recently took over the town's football team, and the directors yesterday submitted their business plan for approval by the Rugby Football League board.
Schofield, who was sacked as player-coach of Huddersfield last summer, is currently playing rugby union with Aberavon but is expected to lend his vast experience to reversing the ailing fortunes of Doncaster.
The Doncaster coach, Colin Maskill, is hoping to sign Schofield in time for the Challenge Cup tie against the Oldham amateur club, St Annes, on 31 January.
First Division Hull KR have completed their overseas quota with the signing of utility forward David Luckwell, who made 57 first-grade appearances with the Canterbury Bulldogs.