The Baggies manager says he will not be rushed into making early summer signings, pointing to last year's later business which helped secure a top-half finish
Last summer, the likes of Claudio Yacob and Romelu Lukaku were signed in July and August respectively, with Clarke seeing those months as more productive for transfers.
And he also revealed that the club are very much in the early stages of lining up potential transfer targets, with no signings currently imminent.
"We have a list of players but I'd be lying if I said we had players lined up to come in because we haven't," Clarke told the Birmingham Mail.
"It's a long summer and you tend to find that there aren't many signings in June and I think that will be the case again this year.
"Last year the only player we signed in June was Ben Foster and that was a carry on from the end of the previous season, when he'd been here on loan.
"Every other deal was done in July and August and that will be the same again this year."
Meanwhile, Goal understands Lukaku is set for showdown talks with Chelsea amid interest from Everton, Fulham and West Ham.