Alan Hutton believes there is “a big building job” to be done at Tottenham this summer as the club prioritised strengthening their front line over their defence in January.

The former Lilywhites right-back, speaking exclusively to Football Insider correspondent Dylan Childs, said that Jose Mourinho will have to sort out a leaky backline to get his side competing at the highest level again.

Spurs have bolstered their offensive options this month with the arrival of both midfielder Gedson Fernandes and winger Steven Bergwijn in a deal that could rise to £27million.

The 22-year-old Dutchman, who put pen to paper on a five-year-deal on Tuesday, scored five goals and contributed 10 assists in his 16 Eredivisie appearances this season.

When asked if the North London side have strengthened in the wrong areas, Hutton told Football Insider: “Mourinho wants those options, he wants fast players, he wants ball carriers and players that can really hurt defences. When Harry Kane comes back, they have got a lot of options up there.

“For me, there are other positions he needs to get in. Perhaps he thinks he can cope with the players he has got until the summer, we will have to wait and see.

There have been great acquisitions in the forward-thinking areas but I do believe they need to sort out their defence to be a real force again. In the summer it will be a big building job.”

The Netherlands international takes the number 23 shirt vacated by Christian Eriksen following his £16.9million move to Inter Milan.

Left-back Danny Rose was the latest to leave the North London club after the 29-year-old joined Steve Bruce’s Newcastle for the remainder of the season.

In other Tottenham news, pen is put to paper as deadline day signing is completed.