After the season that has just been, there is always a clamour for what you would call a marquee signing.

The capture of Jonny Hayes might not have been seen as the so called superstar name that many might have cried out for – but to me he ticks all the boxes in terms of being a sensible and solid signing.

If you look through the past at signings, it is not always the big names who have come and made an impression.

Few really knew what Kris Commons would bring when he was signed but he was an outstanding player for the club, while you could even include the likes of Leigh Griffiths in there too in terms of players who came and surpassed all expectations when they got their feet under the desk.

Hayes has obviously worked with Brendan Rodgers at Reading when he was just a kid and they clearly have a strong working relationship. As we have seen already from the season that has just concluded, that can be so important – Scott Sinclair’s career was entirely re-invigorated by getting back to work with a manager who knew him and knew how to get the best out of him.

It looks as though any deal for Roberts might be shelved with the player looking as though he wishes to have a go at impressing Pep Guardiola this summer.

But I suspect that Celtic were prepared to push the boat out for him - and they will do so one or or two players this summer.

However, there is a big difference between pushing the boat out – and sinking it completely.

It is about balance.

You always have to be aware too of upsetting the equilibrium within a dressing room. In my own experience, players will accept a ‘superstar’ signing if you like earning a bit more money because there is an appreciation that he might bring something exceptional to the team and take them to a different level.

But it is inevitable that you get problems if you have players who are perhaps marginally better than what you have but are earning significantly more money.

What we have seen operated successfully this season is the type of deals that have brought Moussa Dembele and Sinclair to the club. Celtic extended themselves a little, not with the transfer fee but with the salaries on offer, to get them to Celtic and I think ultimately too it comes down to players wanting to be at the club.

It has worked out well in both of their situations and if you can get back into the Champions League then there is the possibility of being able to attract players of that ilk.

I think I have been relatively consistent in saying what I think Celtic need for next season, although I do think that there is an argument to say that they could do nothing in the window and, in a domestic sense at least, would still be far too strong for anyone else to get near.

I would still suspect that they will go all out to bring in a couple of players who can add a little bit of quality because the aim now isn’t just to go out and win the Treble again but to make something of an impact in Europe.

That is always going to be the barometer for Celtic but there is the small matter of the qualifiers to negotiate first.

These three qualifying rounds are without question the most important games of the entire season for the club. They underpin everything that follows and getting into the group stages sets the tone for the campaign.

There is obviously a major financial impact too with the possibility of in there with Europe’s elite an enticing carrot when it comes to attracting players to the club. But even with all that aside, it is where Celtic should be playing their football.

Ideally you would like to think that there might be one or two players brought in who could help to make sure that they get there again but the squad that is in place at the minute ought to feel confident enough of seeing the job through after the season they have just enjoyed.