Arsenal boss Mikel Arteta says he's yet to make a decision on a first-choice pairing in attack.
Arteta played Eddie Nketiah alongside Gabriel Jesus for victory over Orlando City.
He said, "We want to build those relationships and they haven't played a lot of minutes together yet, the same with Martin and Gabi, for example.
"We have to start to do that, we obviously do it in training, but to put it into practice in matches is important and you can see that they're finding themselves with good timing and it's important because they are two players with a big goal threat."
Arteta also discussed William Saliba's contract situation: "We always have a plan and when we have to execute it, that's a different story and football is a really funny game and we are really happy to have him and you can see the way he's adapted, the way he's matured and he's playing well and we are delighted to have him."