Celtic are in an odd position this summer of attempting to rebuild a team which is currently set to secure their fifth title in a row.
Once again the challenge from their rivals has been weak, and with Rangers winning promotion, they need to strengthen so they can pull away and not allow the Gers to catch them up.
One area to strengthen is defence, with Tyler Blackett failing to convince on loan from Manchester United, and Efe Ambrose limited at best, and exposed in European competition.
Erik Sviatchenko's arrival in January was a good start, but one player worth considering is Tiago Ilori, who seems set to leave Liverpool this summer after a lack of opportunities.
Ilori was loaned to Aston Villa this season but returned after failing to crack their starting line-up, a worrying sign perhaps given their struggles this season, and went onto play three FA Cup games for Liverpool.
The 23-year-old is better than that suggests, winning one international cap for Portugal, and impressing for the under-21s last summer, shackling the prolific Harry Kane when his side met England and kept the Three Lions from scoring.
Ilori has not really had a fair chance at Liverpool, despite being signed in 2013. Brendan Rodgers was the manager who signed him from Sporting Lisbon, but sent him out on various loans, to Bordeaux and Granada.
His under-21 tournament involvement meant he missed Liverpool's pre-season last summer when he really needed to be there and hitting the ground running, and a fresh start is best for all.
Celtic are a team where he could expect more regular football than at Liverpool, but also allow him to challenge for titles and play in Europe, and get his career back on track.
With Jurgen Klopp making his own signings, Liverpool will not stand in Ilori's way, and Celtic would not have to pay much at all to snap him up, valued at £3m by transfermarkt.
The only question is whether Brendan Rodgers being appointed at Celtic would actually work against the chances of a transfer. The Northern Irishman is among the contenders with the bookies, but his failure to use Ilori at Liverpool would suggest against a second chance.