He also discussed his side’s finishing and the Hammers’ recent form as they prepare to meet at the Gtech Community Stadium.
Henry is currently sidelined with a hamstring injury, while Janelt is dealing with a metatarsal issue. Henderson has been absent since the international break.
"Vitaly and Jordan are pretty close, so we’ll make a decision on that tomorrow, but they’ve made good progress," Andrews told club website.
"Rico is not as close. Josh had to work really hard to get back to this point, so it was lovely to have him as part of the squad. He wouldn’t be on the bench if I didn’t think he could make an impact of sorts.
"We haven’t really wanted to shout about the progress he's making from the rooftops and add more pressure to his journey back, which has obviously been very, very long.
"We’re very careful around how and when we train him. We still need to look after him really carefully but he’s looking pretty free and has trained really well over the last few weeks."