The fact that Tottenham have signed Carlos Vinicius on loan with an option to buy rather than a permanent transfer has set off “alarm bells” for Alex McLeish.

Speaking exclusively to Football Insider assistant editor Russell Edge, the former Birmingham City and Scotland manager believes it will take time for Vinicius to settle into the Premier League.

Tottenham confirmed on Friday that they had signed the 25-year-old on an initial season-long loan from Benfica for a fee of £2.7m with an option to make the transfer permanent for £40.83m.

The striker was the top goalscorer in the Primeira Liga last season finding the net 18 times in the League.

Asked by Football Insider whether Jose Mourinho has finally found a good back up for Harry Kane, McLeish said: “It’s hard to find a backup for Kane and for somebody to come in and hit the ground running.

“Vinicius, you would think would have the aura and the presence to think ‘I can do this’.

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“Often in the Premier League with a foreign player coming in if they’re not an absolutely huge name like the Viera’s way back in the day with Arsenal and Thierry Henry, they were absolutely firing because they were top level.

“Vinicius is just below the level so it may take him to settle.

“Let’s go back when Gareth Bale made his big exit a few years ago for £08m and they went out and bought six players and everybody was like ‘wow, what a team they’ve got now!’ But a lot of those guys took ages to settle in and that can happen.

“Unless it’s a big household name who has got the mentality and the wherewithal to destroy Premier League defences as a striker.

“That safety valve means there are alarm bells already for me.”

In other Tottenham news, Football Insider understands there are seven senior Spurs stars are in line to leave the club by Monday.