Mathieu Debuchy will undergo a medical this week (or perhaps has already undergone a medical) as Arsenal set to complete his purchase from Newcastle for £7.9m, according to the Guardian. Other outfits, such as the Mirror and Daily Mail, and GFN report that the final price could be somewhere in the region of £10m. The Guardian report that either Joel Campbell or Carl Jenkinson could be included on loan to Newcastle in the deal. Both would make sense, although Jenkinson less-so, as the next right back, Hector Bellerin, is rather inexperienced.
With that in mind, Debuchy's signing should be announced this week. One part of any possible delay could be down to the fact that until Thursday, Arsenal don't have a kit to photograph players in. While it's naive to expect that there will be an announcement in conjunction with the kit release, expect any new players to be announced after Thursday.