Arnold is a winger of proven try-scoring ability and, at 20, represents an impressive purchase. It is also further evidence of the disintegration of the Saints side that won the first Super League title in 1996 and the Challenge Cup for the last two years.
Warrington have also made a significant signing, with the news that the Western Suburbs stand-off, Adam Doyle, is joining them for next year. Doyle, aged 22, was rated one of Australia's best prospects as a teenager but last season he was one of six Wests first-teamers sacked.
The uncertainty over the future of Keighley will carry over into the new year after a court hearing in Leeds to consider lifting an injunction placed on the Rugby League by the club, which has been threatened with expulsion, was deferred.
The highlight of today's Silk Cut Challenge Cup ties is the visit of the first Irish club to take part, the Dublin Blues, to Dewsbury Moor. The Blues qualified by winning an eight-team tournament spanning both sides of the Irish border.Reuse content