<br><img src="https://i2-prod.footballscotland.co.uk/incoming/article27205454.ece/ALTERNATES/s615/0_Ange-Postecoglou-file-photo.jpg" style="display:none"><br>Celtic were slightly underwhelming last season in the Champions League under Ange Postecoglou <br> <!-- wp:buttons {"contentJustification":"center","align":"wide"} --> <div class="wp-block-buttons alignwide is-content-justification-center"><!-- wp:button --> <div class="wp-block-button"><a class="wp-block-button__link" href="https://www.glasgowlive.co.uk/sport/brendan-rodgers-told-how-celtic-27746931" target="_blank" rel="noopener">Continue Reading</a></div> <!-- /wp:button --></div> <!-- /wp:buttons -->