The Rovers boss is expected to make changes to his line-up for Saturday's match at Loftus Road after being far from impressed with the side's second half performance in the midweek defeat against Ipswich Town.
"Our second half performance wasn't acceptable, the calibre of goals that we gave away wasn't acceptable," said Bowyer.
"I'm a great believer if you've got the shirt then keep the shirt and that is what we'll be saying to them on Saturday.
"Whoever has that shirt in the starting eleven on Saturday make sure you've got it for the next game at home to Millwall.
Supporters who haven't yet purchased their tickets for Saturday's away match at Queens Park Rangers can now do so on the day of the game.
Fans have until 4pm Friday to obtain their tickets for the Loftus Road clash from Ewood Park, otherwise it is pay on the turnstiles - cash only.
Some 750 of the 1000 ticket allocation has so far been sold, with all the silver priced tickets being snapped up expect for the family area.
Ticket prices are £30.00 Adults, £20.00 Seniors (over 60), £20.00 Young Adult 16-21 (Proof of Age Required), £15.00 Under 16. Under-8s go free with an Adult ticket in the family area.
For further information call the ticket office on 0871 222 1444.