Rangers may well be regretting a failure to move for Lewis Ferguson as his form at Bologna generates reported £22m interest from the top of Serie A. The son and nephew of ex-Rangers midfielders Derek and Barry, Rangers were repeatedly linked with Lewis Ferguson during ther Scotland international’s time at Aberdeen. The Ibrox club’s failure to strike a deal for the now 24-year-old has drawn increasing scrutiny amid a rich vein of form at Italian side Bologna. Now, those Rangers fans who’ve routinely lamented the club’s failure to sign Lewis Ferguson should look away as the latest reports point …