By Chris Harris
Walcott has made 31 appearances this season, 16 of them as a substitute. The 19-year-old has five goals to his name and his reputation as an 'impact' player was enhanced at the weekend when he came off the bench to run Bolton ragged at the Reebok.
The England international did his damage on the right flank on Saturday but has also made his mark in a central role. Wenger will ponder the best way to use Walcott as a vital week unfolds.
"Theo has made a big impact every time he's come on at the moment," said Wenger.
"I'll use him sometimes with him coming on. Other times I'll start with him. I will see. The first game [against Liverpool] will decide a lot."Copyright 2015 The Arsenal Football Club plc. Permission to use quotations from this article is granted subject to appropriate credit being given to www.arsenal.com as the source