But Bayliss believes the 32-year-old opener, England's record runscorer with 147 Test appearances to his name, will come good.
"There could be a possibility he would be right for the next game, but we will probably let him go there and make sure he is right for selection for the first Test", Bayliss told reporters in Townsville.
"It's the first time I have seen him up close over a number of overs", Bayliss said.
Allrounder Moeen Ali will make his first competitive outing of the tour in the Townsville game after overcoming a side strain. Chris Woakes, James Anderson and Craig Overton wreaked havoc under lights on the third day and picked seven wickets only for 70 runs in the second innings.
England rolled the CA XI for 75 to wrap up an emphatic 192-run victory in the four-day warm-up game in Adelaide on Saturday.
Wood, 27, is England's quickest bowler when fit but has played just ten Tests since his debut in 2015 following a succession of injuries.
Despite the impressive innings, Engalnd's top order stood their ground and grinded out the final sessions of a gruelling four-day Test to finish with figures of 2-206 when both captains agreed to call the game an hour early at North Sydney Oval. He would like to be scoring a few more runs. "He would like to be scoring a few more runs, but he's played nearly 150 Tests, I'm sure he's been through this before". He's hitting plenty in the middle of the bat in the nets.
"We have games like that where we have lost wickets and it is a concern". It's not for want of trying.
"The batsmen realise they have got to do better and they are working hard to do that", he added.