There are probably other ways, but...
% a patterned test array
A = repmat({(1:16).', (17:32).'; (33:48).', (49:64).'},5,5)
A = 10×10 cell array
{16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double}
{16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double}
{16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double}
{16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double}
{16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double}
{16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double}
{16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double}
{16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double}
{16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double}
{16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double} {16×1 double}
B = cell2mat(A(:).');
B = reshape(permute(B,[2 3 1]),10,10,[]);
B = reshape(num2cell(B,[1 2]),4,4)
B = 4×4 cell array
{10×10 double} {10×10 double} {10×10 double} {10×10 double}
{10×10 double} {10×10 double} {10×10 double} {10×10 double}
{10×10 double} {10×10 double} {10×10 double} {10×10 double}
{10×10 double} {10×10 double} {10×10 double} {10×10 double}
% inspect the result
B{1}
ans = 10×10
1 17 1 17 1 17 1 17 1 17
33 49 33 49 33 49 33 49 33 49
1 17 1 17 1 17 1 17 1 17
33 49 33 49 33 49 33 49 33 49
1 17 1 17 1 17 1 17 1 17
33 49 33 49 33 49 33 49 33 49
1 17 1 17 1 17 1 17 1 17
33 49 33 49 33 49 33 49 33 49
1 17 1 17 1 17 1 17 1 17
33 49 33 49 33 49 33 49 33 49
B{2}
ans = 10×10
2 18 2 18 2 18 2 18 2 18
34 50 34 50 34 50 34 50 34 50
2 18 2 18 2 18 2 18 2 18
34 50 34 50 34 50 34 50 34 50
2 18 2 18 2 18 2 18 2 18
34 50 34 50 34 50 34 50 34 50
2 18 2 18 2 18 2 18 2 18
34 50 34 50 34 50 34 50 34 50
2 18 2 18 2 18 2 18 2 18
34 50 34 50 34 50 34 50 34 50
