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Another position with lots potential tourists without many clear-cut choices as form and injury has taken its toll on the favourites.
George North and Alex Cuthbert will likely tour on the back of fine campaigns for the Welsh. Both are big and powerful with a nose of the try-line. Cuthbert has shown a real killer instinct this season while North has shone despite drawing huge attention.
Eli Walker is an exciting talent, and potential bolter, but his lack of action during the Six Nations means his form in the Pro 12 will be the deciding factor.
Tim Visser and Sean Maitland both had strong debut campaigns for Scotland but Visser had his struggles when on the back foot. Maitland is the more rounded player, offensively and defensively, but Visser is a hard man to stop when he gets going. Visser would be a like-for-like replacement for Cuthbert and North but Maitland would offer something different.
Ireland have had their issues with injury on the wing so there are a host of possible tourists. Tommy Bowe is a certain tourist if he finds fitness and form, but that is becoming less likely by the day. Simon Zebo would bring a real X-Factor to the side and is hoping to be back from injury in time for the trip to Harlequins.
Other potential Irish tourists are Keith Earls and Craig Gilroy. Earls, a bolter in 2009, has an eye for a gap but tends to pin his ears back and ignore support, often butchering chances. Gilroy is light but has stood out in a poor campaign. He is difficult to pull down, finding space where he shouldn't and is brave in defence.
Chris Ashton was seen as a likely tourist but he had a horrible campaign, falling off tackles and doing nothing with ball in hand. He's unlikely to be given much chance to shine on the Saracens wing either. We've already discussed Brown so the only other candidate's come from the Aviva Premiership.
David Strettle has his fans but I don't think Gatland is among them, while Christian Wade is a potential bolter given his sparking form at Wasps.
Tourists: North, Cuthbert, Maitland, Bowe/Zebo